30102090920 has 64 divisors (see below), whose sum is σ = 73913178240. Its totient is φ = 10942329600.

The previous prime is 30102090911. The next prime is 30102090923. The reversal of 30102090920 is 2909020103.

It is a super-2 number, since 2×30102090920² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30102090920.

It is not an unprimeable number, because it can be changed into a prime (30102090923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1420805 + ... + 1441835.

It is an arithmetic number, because the mean of its divisors is an integer number (1154893410).

Almost surely, 2^30102090920 is an apocalyptic number.

It is an amenable number.

30102090920 is an abundant number, since it is smaller than the sum of its proper divisors (43811087320).

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

30102090920 is a wasteful number, since it uses less digits than its factorization.

30102090920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24306 (or 24302 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

The spelling of 30102090920 in words is "thirty billion, one hundred two million, ninety thousand, nine hundred twenty".