30538000 has 40 divisors (see below), whose sum is σ = 73845720. Its totient is φ = 12214400.

The previous prime is 30537979. The next prime is 30538009. The reversal of 30538000 is 83503.

It can be written as a sum of positive squares in 4 ways, for example, as 1679616 + 28858384 = 1296^2 + 5372^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (30538009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5635 + ... + 9634.

It is an arithmetic number, because the mean of its divisors is an integer number (1846143).

Almost surely, 2^30538000 is an apocalyptic number.

It is an amenable number.

30538000 is an abundant number, since it is smaller than the sum of its proper divisors (43307720).

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

30538000 is a wasteful number, since it uses less digits than its factorization.

30538000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15292 (or 15276 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 30538000 is about 5526.1197960232. The cubic root of 30538000 is about 312.5696911236.

The spelling of 30538000 in words is "thirty million, five hundred thirty-eight thousand".