30538900 has 36 divisors (see below), whose sum is σ = 75738208. Its totient is φ = 10470240.

The previous prime is 30538897. The next prime is 30538913. The reversal of 30538900 is 983503.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21114 + ... + 22513.

Almost surely, 2^30538900 is an apocalyptic number.

It is an amenable number.

30538900 is an abundant number, since it is smaller than the sum of its proper divisors (45199308).

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

30538900 is a wasteful number, since it uses less digits than its factorization.

30538900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43648 (or 43641 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 30538900 is about 5526.2012268827. The cubic root of 30538900 is about 312.5727617237.

The spelling of 30538900 in words is "thirty million, five hundred thirty-eight thousand, nine hundred".