30238156 has 36 divisors (see below), whose sum is σ = 58751784. Its totient is φ = 13603200.

The previous prime is 30238147. The next prime is 30238157. The reversal of 30238156 is 65183203.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30238157) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27171 + ... + 28261.

It is an arithmetic number, because the mean of its divisors is an integer number (1631994).

Almost surely, 2^30238156 is an apocalyptic number.

It is an amenable number.

30238156 is a deficient number, since it is larger than the sum of its proper divisors (28513628).

30238156 is a wasteful number, since it uses less digits than its factorization.

30238156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162 (or 1147 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 30238156 is about 5498.9231673119. The cubic root of 30238156 is about 311.5433133374.

The spelling of 30238156 in words is "thirty million, two hundred thirty-eight thousand, one hundred fifty-six".