45729072 has 30 divisors (see below), whose sum is σ = 127978292. Its totient is φ = 15242976.

The previous prime is 45729043. The next prime is 45729091. The reversal of 45729072 is 27092754.

It is a super-2 number, since 2×45729072² = 4182296051962368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 158638 + ... + 158925.

Almost surely, 2^45729072 is an apocalyptic number.

It is an amenable number.

45729072 is an abundant number, since it is smaller than the sum of its proper divisors (82249220).

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

45729072 is a wasteful number, since it uses less digits than its factorization.

45729072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317577 (or 317568 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 45729072 is about 6762.3274099972. The cubic root of 45729072 is about 357.5999609627.

The spelling of 45729072 in words is "forty-five million, seven hundred twenty-nine thousand, seventy-two".