729120972 has 24 divisors (see below), whose sum is σ = 1790824000. Its totient is φ = 230248656.

The previous prime is 729120971. The next prime is 729121021. The reversal of 729120972 is 279021927.

It is a self number, because there is not a number n which added to its sum of digits gives 729120972.

It is not an unprimeable number, because it can be changed into a prime (729120971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1598722 + ... + 1599177.

Almost surely, 2^729120972 is an apocalyptic number.

It is an amenable number.

729120972 is an abundant number, since it is smaller than the sum of its proper divisors (1061703028).

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

729120972 is a wasteful number, since it uses less digits than its factorization.

729120972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3197925 (or 3197923 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 729120972 is about 27002.2401292930. The cubic root of 729120972 is about 900.0497799626.

The spelling of 729120972 in words is "seven hundred twenty-nine million, one hundred twenty thousand, nine hundred seventy-two".