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72425196 = 22322011811
BaseRepresentation
bin1000101000100…
…01111011101100
312001021120200200
410110101323230
5122020101241
611104153500
71536414114
oct424217354
9161246620
1072425196
1137978138
1220308890
131200a65c
149894044
1565594b6
hex4511eec

72425196 has 18 divisors (see below), whose sum is σ = 183074892. Its totient is φ = 24141720.

The previous prime is 72425153. The next prime is 72425237. The reversal of 72425196 is 69152427.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×724251963 (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2011811 = 72425196 / (7 + 2 + 4 + 2 + 5 + 1 + 9 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 72425196.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1005870 + ... + 1005941.

Almost surely, 272425196 is an apocalyptic number.

It is an amenable number.

72425196 is an abundant number, since it is smaller than the sum of its proper divisors (110649696).

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

72425196 is a wasteful number, since it uses less digits than its factorization.

72425196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011821 (or 2011816 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 72425196 is about 8510.2994071889. The cubic root of 72425196 is about 416.8340868180.

The spelling of 72425196 in words is "seventy-two million, four hundred twenty-five thousand, one hundred ninety-six".

Divisors: 1 2 3 4 6 9 12 18 36 2011811 4023622 6035433 8047244 12070866 18106299 24141732 36212598 72425196