120633640 has 16 divisors (see below), whose sum is σ = 271425780. Its totient is φ = 48253440.

The previous prime is 120633637. The next prime is 120633647. The reversal of 120633640 is 46336021.

It can be written as a sum of positive squares in 2 ways, for example, as 118679236 + 1954404 = 10894^2 + 1398^2 .

It is not an unprimeable number, because it can be changed into a prime (120633647) 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, 1507881 + ... + 1507960.

Almost surely, 2^120633640 is an apocalyptic number.

120633640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120633640 is an abundant number, since it is smaller than the sum of its proper divisors (150792140).

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

120633640 is a wasteful number, since it uses less digits than its factorization.

120633640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3015852 (or 3015848 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 120633640 is about 10983.3346484572. The cubic root of 120633640 is about 494.1090527272.

Adding to 120633640 its reverse (46336021), we get a palindrome (166969661).

The spelling of 120633640 in words is "one hundred twenty million, six hundred thirty-three thousand, six hundred forty".