30256137 has 6 divisors (see below), whose sum is σ = 43703322. Its totient is φ = 20170752.

The previous prime is 30256123. The next prime is 30256157. The reversal of 30256137 is 73165203.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 22099401 + 8156736 = 4701^2 + 2856^2 .

It is not a de Polignac number, because 30256137 - 2²⁰ = 29207561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30256137.

It is not an unprimeable number, because it can be changed into a prime (30256117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1680888 + ... + 1680905.

It is an arithmetic number, because the mean of its divisors is an integer number (7283887).

Almost surely, 2^30256137 is an apocalyptic number.

It is an amenable number.

30256137 is a deficient number, since it is larger than the sum of its proper divisors (13447185).

30256137 is a wasteful number, since it uses less digits than its factorization.

30256137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361799 (or 3361796 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 30256137 is about 5500.5578807972. The cubic root of 30256137 is about 311.6050537679.

The spelling of 30256137 in words is "thirty million, two hundred fifty-six thousand, one hundred thirty-seven".