30977506 has 12 divisors (see below), whose sum is σ = 54052758. Its totient is φ = 13276032.

The previous prime is 30977503. The next prime is 30977521. The reversal of 30977506 is 60577903.

It can be written as a sum of positive squares in only one way, i.e., 30969225 + 8281 = 5565^2 + 91^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30977503) 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, 157951 + ... + 158146.

Almost surely, 2^30977506 is an apocalyptic number.

30977506 is a deficient number, since it is larger than the sum of its proper divisors (23075252).

30977506 is a wasteful number, since it uses less digits than its factorization.

30977506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316113 (or 316106 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 37.

The square root of 30977506 is about 5565.7439754268. The cubic root of 30977506 is about 314.0620659763.

It can be divided in two parts, 309 and 77506, that added together give a triangular number (77815 = T₃₉₄).

The spelling of 30977506 in words is "thirty million, nine hundred seventy-seven thousand, five hundred six".