30874285 has 16 divisors (see below), whose sum is σ = 40042800. Its totient is φ = 22717440.

The previous prime is 30874267. The next prime is 30874307. The reversal of 30874285 is 58247803.

It can be written as a sum of positive squares in 8 ways, for example, as 3143529 + 27730756 = 1773^2 + 5266^2 .

It is not a de Polignac number, because 30874285 - 2⁷ = 30874157 is a prime.

It is a super-2 number, since 2×30874285² = 1906442948522450, which contains 22 as substring.

It is a congruent number.

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, 22005 + ... + 23365.

It is an arithmetic number, because the mean of its divisors is an integer number (2502675).

Almost surely, 2^30874285 is an apocalyptic number.

30874285 is the 4537-th pentagonal number.

It is an amenable number.

30874285 is a deficient number, since it is larger than the sum of its proper divisors (9168515).

30874285 is a wasteful number, since it uses less digits than its factorization.

30874285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 30874285 is about 5556.4633536090. The cubic root of 30874285 is about 313.7128461901.

The spelling of 30874285 in words is "thirty million, eight hundred seventy-four thousand, two hundred eighty-five".