30826513 has 16 divisors (see below), whose sum is σ = 32697936. Its totient is φ = 29030400.

The previous prime is 30826489. The next prime is 30826517. The reversal of 30826513 is 31562803.

It can be written as a sum of positive squares in 8 ways, for example, as 1580049 + 29246464 = 1257^2 + 5408^2 .

It is a cyclic number.

It is not a de Polignac number, because 30826513 - 2⁹ = 30826001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30826517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272745 + ... + 272857.

It is an arithmetic number, because the mean of its divisors is an integer number (2043621).

Almost surely, 2^30826513 is an apocalyptic number.

It is an amenable number.

30826513 is a deficient number, since it is larger than the sum of its proper divisors (1871423).

30826513 is a wasteful number, since it uses less digits than its factorization.

30826513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324.

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

The square root of 30826513 is about 5552.1629118750. The cubic root of 30826513 is about 313.5509592951.

The spelling of 30826513 in words is "thirty million, eight hundred twenty-six thousand, five hundred thirteen".