729567972 has 60 divisors (see below), whose sum is σ = 2179703680. Its totient is φ = 208447344.

The previous prime is 729567967. The next prime is 729567989. The reversal of 729567972 is 279765927.

729567972 is a `hidden beast` number, since 7 + 2 + 9 + 567 + 9 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 158572 + ... + 163107.

Almost surely, 2^729567972 is an apocalyptic number.

It is an amenable number.

729567972 is an abundant number, since it is smaller than the sum of its proper divisors (1450135708).

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

729567972 is a wasteful number, since it uses less digits than its factorization.

729567972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321702 (or 321691 counting only the distinct ones).

The product of its digits is 3333960, while the sum is 54.

The square root of 729567972 is about 27010.5159521250. The cubic root of 729567972 is about 900.2336726582.

The spelling of 729567972 in words is "seven hundred twenty-nine million, five hundred sixty-seven thousand, nine hundred seventy-two".