30790220 has 24 divisors (see below), whose sum is σ = 64765008. Its totient is φ = 12296000.

The previous prime is 30790219. The next prime is 30790229. The reversal of 30790220 is 2209703.

It is not an unprimeable number, because it can be changed into a prime (30790229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20495 + ... + 21945.

It is an arithmetic number, because the mean of its divisors is an integer number (2698542).

Almost surely, 2^30790220 is an apocalyptic number.

It is an amenable number.

30790220 is an abundant number, since it is smaller than the sum of its proper divisors (33974788).

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

30790220 is a wasteful number, since it uses less digits than its factorization.

30790220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521 (or 2519 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 30790220 is about 5548.8935834092. The cubic root of 30790220 is about 313.4278599165.

Adding to 30790220 its reverse (2209703), we get a palindrome (32999923).

The spelling of 30790220 in words is "thirty million, seven hundred ninety thousand, two hundred twenty".