30291020 has 12 divisors (see below), whose sum is σ = 63611184. Its totient is φ = 12116400.

The previous prime is 30291007. The next prime is 30291031. The reversal of 30291020 is 2019203.

It is a self number, because there is not a number n which added to its sum of digits gives 30291020.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757256 + ... + 757295.

It is an arithmetic number, because the mean of its divisors is an integer number (5300932).

Almost surely, 2^30291020 is an apocalyptic number.

It is an amenable number.

30291020 is an abundant number, since it is smaller than the sum of its proper divisors (33320164).

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

30291020 is a wasteful number, since it uses less digits than its factorization.

30291020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514560 (or 1514558 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 30291020 is about 5503.7278275729. The cubic root of 30291020 is about 311.7247599997.

The spelling of 30291020 in words is "thirty million, two hundred ninety-one thousand, twenty".