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72969000 = 23353131871
BaseRepresentation
bin1000101100101…
…10101100101000
312002022012122120
410112112230220
5122140002000
611123551240
71544140416
oct426265450
9162265576
1072969000
1138209765
122052b520
131216b030
1499962b6
1566156a0
hex4596b28

72969000 has 128 divisors (see below), whose sum is σ = 245306880. Its totient is φ = 17952000.

The previous prime is 72968999. The next prime is 72969007. The reversal of 72969000 is 96927.

It is a super-2 number, since 2×729690002 = 10648949922000000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72969007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38065 + ... + 39935.

It is an arithmetic number, because the mean of its divisors is an integer number (1916460).

Almost surely, 272969000 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 72969000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122653440).

72969000 is an abundant number, since it is smaller than the sum of its proper divisors (172337880).

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

72969000 is a wasteful number, since it uses less digits than its factorization.

72969000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1908 (or 1894 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 72969000 is about 8542.1894148983. The cubic root of 72969000 is about 417.8747516660.

The spelling of 72969000 in words is "seventy-two million, nine hundred sixty-nine thousand".

Divisors: 1 2 3 4 5 6 8 10 12 13 15 20 24 25 26 30 39 40 50 52 60 65 75 78 100 104 120 125 130 150 156 195 200 250 260 300 312 325 375 390 500 520 600 650 750 780 975 1000 1300 1500 1560 1625 1871 1950 2600 3000 3250 3742 3900 4875 5613 6500 7484 7800 9355 9750 11226 13000 14968 18710 19500 22452 24323 28065 37420 39000 44904 46775 48646 56130 72969 74840 93550 97292 112260 121615 140325 145938 187100 194584 224520 233875 243230 280650 291876 364845 374200 467750 486460 561300 583752 608075 701625 729690 935500 972920 1122600 1216150 1403250 1459380 1824225 1871000 2432300 2806500 2918760 3040375 3648450 4864600 5613000 6080750 7296900 9121125 12161500 14593800 18242250 24323000 36484500 72969000