30240856 has 16 divisors (see below), whose sum is σ = 59686200. Its totient is φ = 14324544.

The previous prime is 30240827. The next prime is 30240857. The reversal of 30240856 is 65804203.

It is a super-2 number, since 2×30240856² = 1829018743225472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30240857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99325 + ... + 99628.

Almost surely, 2^30240856 is an apocalyptic number.

It is an amenable number.

30240856 is a deficient number, since it is larger than the sum of its proper divisors (29445344).

30240856 is a wasteful number, since it uses less digits than its factorization.

30240856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198978 (or 198974 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 30240856 is about 5499.1686644437. The cubic root of 30240856 is about 311.5525857493.

The spelling of 30240856 in words is "thirty million, two hundred forty thousand, eight hundred fifty-six".