120728492 has 12 divisors (see below), whose sum is σ = 223702920. Its totient is φ = 56813376.

The previous prime is 120728483. The next prime is 120728497. The reversal of 120728492 is 294827021.

It is not an unprimeable number, because it can be changed into a prime (120728497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 887642 + ... + 887777.

It is an arithmetic number, because the mean of its divisors is an integer number (18641910).

Almost surely, 2^120728492 is an apocalyptic number.

It is an amenable number.

120728492 is a deficient number, since it is larger than the sum of its proper divisors (102974428).

120728492 is a wasteful number, since it uses less digits than its factorization.

120728492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775440 (or 1775438 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 120728492 is about 10987.6517964486. The cubic root of 120728492 is about 494.2385217366.

The spelling of 120728492 in words is "one hundred twenty million, seven hundred twenty-eight thousand, four hundred ninety-two".