30355138 has 32 divisors (see below), whose sum is σ = 52420608. Its totient is φ = 13054800.

The previous prime is 30355123. The next prime is 30355153. The reversal of 30355138 is 83155303.

It is an interprime number because it is at equal distance from previous prime (30355123) and next prime (30355153).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31581 + ... + 32527.

It is an arithmetic number, because the mean of its divisors is an integer number (1638144).

Almost surely, 2^30355138 is an apocalyptic number.

30355138 is a deficient number, since it is larger than the sum of its proper divisors (22065470).

30355138 is a wasteful number, since it uses less digits than its factorization.

30355138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 30355138 is about 5509.5497093683. The cubic root of 30355138 is about 311.9445510162.

The spelling of 30355138 in words is "thirty million, three hundred fifty-five thousand, one hundred thirty-eight".