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72626136 = 23311289281
BaseRepresentation
bin1000101010000…
…10111111011000
312001122210022220
410111002333120
5122043014021
611112344040
71541212002
oct425027730
9161583286
1072626136
1137aa5100
12203a5020
131207ac5b
149907372
156598cc6
hex4542fd8

72626136 has 96 divisors (see below), whose sum is σ = 202532400. Its totient is φ = 21683200.

The previous prime is 72626123. The next prime is 72626137. The reversal of 72626136 is 63162627.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 72626097 and 72626106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72626137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 258316 + ... + 258596.

Almost surely, 272626136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72626136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101266200).

72626136 is an abundant number, since it is smaller than the sum of its proper divisors (129906264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72626136 is a wasteful number, since it uses less digits than its factorization.

72626136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 386 counting only the distinct ones).

The product of its digits is 18144, while the sum is 33.

The square root of 72626136 is about 8522.0969250531. The cubic root of 72626136 is about 417.2192258020.

It can be divided in two parts, 726 and 26136, that multiplied together give a 4-th power (18974736 = 664).

The spelling of 72626136 in words is "seventy-two million, six hundred twenty-six thousand, one hundred thirty-six".

Divisors: 1 2 3 4 6 8 11 12 22 24 33 44 66 88 89 121 132 178 242 264 267 281 356 363 484 534 562 712 726 843 968 979 1068 1124 1452 1686 1958 2136 2248 2904 2937 3091 3372 3916 5874 6182 6744 7832 9273 10769 11748 12364 18546 21538 23496 24728 25009 32307 34001 37092 43076 50018 64614 68002 74184 75027 86152 100036 102003 129228 136004 150054 200072 204006 258456 272008 275099 300108 408012 550198 600216 816024 825297 1100396 1650594 2200792 3026089 3301188 6052178 6602376 9078267 12104356 18156534 24208712 36313068 72626136