990210120 has 32 divisors (see below), whose sum is σ = 2970630720. Its totient is φ = 264056000.

The previous prime is 990210119. The next prime is 990210131. The reversal of 990210120 is 21012099.

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, 4125756 + ... + 4125995.

It is an arithmetic number, because the mean of its divisors is an integer number (92832210).

Almost surely, 2^990210120 is an apocalyptic number.

It is an amenable number.

990210120 is an abundant number, since it is smaller than the sum of its proper divisors (1980420600).

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

990210120 is a wasteful number, since it uses less digits than its factorization.

990210120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8251765 (or 8251761 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 990210120 is about 31467.6042939401. The cubic root of 990210120 is about 996.7259992841.

The spelling of 990210120 in words is "nine hundred ninety million, two hundred ten thousand, one hundred twenty".