120887730 has 24 divisors (see below), whose sum is σ = 314308332. Its totient is φ = 32236704.

The previous prime is 120887699. The next prime is 120887737. The reversal of 120887730 is 37788021.

It can be written as a sum of positive squares in 2 ways, for example, as 117744201 + 3143529 = 10851^2 + 1773^2 .

It is a super-2 number, since 2×120887730² = 29227686529105800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (120887737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 671509 + ... + 671688.

Almost surely, 2^120887730 is an apocalyptic number.

120887730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120887730 is an abundant number, since it is smaller than the sum of its proper divisors (193420602).

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

120887730 is a wasteful number, since it uses less digits than its factorization.

120887730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343210 (or 1343207 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 120887730 is about 10994.8956338839. The cubic root of 120887730 is about 494.4557225424.

The spelling of 120887730 in words is "one hundred twenty million, eight hundred eighty-seven thousand, seven hundred thirty".