30572420 has 12 divisors (see below), whose sum is σ = 64202124. Its totient is φ = 12228960.

The previous prime is 30572413. The next prime is 30572449. The reversal of 30572420 is 2427503.

It can be written as a sum of positive squares in 2 ways, for example, as 14684224 + 15888196 = 3832^2 + 3986^2 .

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, 764291 + ... + 764330.

It is an arithmetic number, because the mean of its divisors is an integer number (5350177).

Almost surely, 2^30572420 is an apocalyptic number.

It is an amenable number.

30572420 is an abundant number, since it is smaller than the sum of its proper divisors (33629704).

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

30572420 is a wasteful number, since it uses less digits than its factorization.

30572420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528630 (or 1528628 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 30572420 is about 5529.2332198959. The cubic root of 30572420 is about 312.6870815792.

Adding to 30572420 its reverse (2427503), we get a palindrome (32999923).

The spelling of 30572420 in words is "thirty million, five hundred seventy-two thousand, four hundred twenty".