30138365 has 12 divisors (see below), whose sum is σ = 38420436. Its totient is φ = 22691328.

The previous prime is 30138359. The next prime is 30138371. The reversal of 30138365 is 56383103.

It is an interprime number because it is at equal distance from previous prime (30138359) and next prime (30138371).

It can be written as a sum of positive squares in 6 ways, for example, as 7991929 + 22146436 = 2827^2 + 4706^2 .

It is not a de Polignac number, because 30138365 - 2²⁰ = 29089789 is a prime.

It is a Duffinian number.

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, 8984 + ... + 11873.

It is an arithmetic number, because the mean of its divisors is an integer number (3201703).

Almost surely, 2^30138365 is an apocalyptic number.

It is an amenable number.

30138365 is a deficient number, since it is larger than the sum of its proper divisors (8282071).

30138365 is a wasteful number, since it uses less digits than its factorization.

30138365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20896 (or 20879 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 30138365 is about 5489.8419831540. The cubic root of 30138365 is about 311.2002205299.

It can be divided in two parts, 30138 and 365, that added together give a palindrome (30503).

The spelling of 30138365 in words is "thirty million, one hundred thirty-eight thousand, three hundred sixty-five".