30290820 has 72 divisors (see below), whose sum is σ = 98671104. Its totient is φ = 6922944.

The previous prime is 30290789. The next prime is 30290833. The reversal of 30290820 is 2809203.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2212 + ... + 8091.

It is an arithmetic number, because the mean of its divisors is an integer number (1370432).

Almost surely, 2^30290820 is an apocalyptic number.

30290820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30290820 is an abundant number, since it is smaller than the sum of its proper divisors (68380284).

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

30290820 is a wasteful number, since it uses less digits than its factorization.

30290820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10329 (or 10320 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 30290820 is about 5503.7096580397. The cubic root of 30290820 is about 311.7240739318.

The spelling of 30290820 in words is "thirty million, two hundred ninety thousand, eight hundred twenty".