120732720 has 40 divisors (see below), whose sum is σ = 374272176. Its totient is φ = 32195328.

The previous prime is 120732719. The next prime is 120732749. The reversal of 120732720 is 27237021.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251287 + ... + 251766.

Almost surely, 2^120732720 is an apocalyptic number.

120732720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120732720 is an abundant number, since it is smaller than the sum of its proper divisors (253539456).

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

120732720 is a wasteful number, since it uses less digits than its factorization.

120732720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503069 (or 503063 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 120732720 is about 10987.8441925612. The cubic root of 120732720 is about 494.2442912007.

Adding to 120732720 its reverse (27237021), we get a palindrome (147969741).

The spelling of 120732720 in words is "one hundred twenty million, seven hundred thirty-two thousand, seven hundred twenty".