30801956 has 6 divisors (see below), whose sum is σ = 53903430. Its totient is φ = 15400976.

The previous prime is 30801949. The next prime is 30801959. The reversal of 30801956 is 65910803.

It can be written as a sum of positive squares in only one way, i.e., 19009600 + 11792356 = 4360^2 + 3434^2 .

It is not an unprimeable number, because it can be changed into a prime (30801959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3850241 + ... + 3850248.

It is an arithmetic number, because the mean of its divisors is an integer number (8983905).

Almost surely, 2^30801956 is an apocalyptic number.

It is an amenable number.

30801956 is a deficient number, since it is larger than the sum of its proper divisors (23101474).

30801956 is a wasteful number, since it uses less digits than its factorization.

30801956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7700493 (or 7700491 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 30801956 is about 5549.9509907746. The cubic root of 30801956 is about 313.4676769115.

The spelling of 30801956 in words is "thirty million, eight hundred one thousand, nine hundred fifty-six".