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72141084 = 22331933461
BaseRepresentation
bin1000100110011…
…00100100011100
312000202010222000
410103030210130
5121432003314
611054122300
71534121601
oct423144434
9160663860
1072141084
11377a3734
12201b0390
1311c3b242
14981c6a8
156500209
hex44cc91c

72141084 has 48 divisors (see below), whose sum is σ = 188055840. Its totient is φ = 23915520.

The previous prime is 72141077. The next prime is 72141107. The reversal of 72141084 is 48014127.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19114 + ... + 22574.

It is an arithmetic number, because the mean of its divisors is an integer number (3917830).

Almost surely, 272141084 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 72141084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94027920).

72141084 is an abundant number, since it is smaller than the sum of its proper divisors (115914756).

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

72141084 is a wasteful number, since it uses less digits than its factorization.

72141084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3667 (or 3659 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 72141084 is about 8493.5907600967. The cubic root of 72141084 is about 416.2883156029.

The spelling of 72141084 in words is "seventy-two million, one hundred forty-one thousand, eighty-four".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 108 193 386 579 772 1158 1737 2316 3461 3474 5211 6922 6948 10383 10422 13844 20766 20844 31149 41532 62298 93447 124596 186894 373788 667973 1335946 2003919 2671892 4007838 6011757 8015676 12023514 18035271 24047028 36070542 72141084