30961460 has 12 divisors (see below), whose sum is σ = 65019108. Its totient is φ = 12384576.

The previous prime is 30961433. The next prime is 30961501. The reversal of 30961460 is 6416903.

It can be written as a sum of positive squares in 2 ways, for example, as 10837264 + 20124196 = 3292^2 + 4486^2 .

It is a super-2 number, since 2×30961460² = 1917224010663200, 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 3 ways as a sum of consecutive naturals, for example, 774017 + ... + 774056.

It is an arithmetic number, because the mean of its divisors is an integer number (5418259).

Almost surely, 2^30961460 is an apocalyptic number.

It is an amenable number.

30961460 is an abundant number, since it is smaller than the sum of its proper divisors (34057648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30961460 is a wasteful number, since it uses less digits than its factorization.

30961460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548082 (or 1548080 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 30961460 is about 5564.3022922915. The cubic root of 30961460 is about 314.0078297370.

The spelling of 30961460 in words is "thirty million, nine hundred sixty-one thousand, four hundred sixty".