30775072 has 24 divisors (see below), whose sum is σ = 61323696. Its totient is φ = 15200832.

The previous prime is 30775037. The next prime is 30775091. The reversal of 30775072 is 27057703.

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, 3138 + ... + 8449.

It is an arithmetic number, because the mean of its divisors is an integer number (2555154).

Almost surely, 2^30775072 is an apocalyptic number.

30775072 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30775072 is a deficient number, since it is larger than the sum of its proper divisors (30548624).

30775072 is a wasteful number, since it uses less digits than its factorization.

30775072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11680 (or 11672 counting only the distinct ones).

The product of its (nonzero) digits is 10290, while the sum is 31.

The square root of 30775072 is about 5547.5284586922. The cubic root of 30775072 is about 313.3764519907.

The spelling of 30775072 in words is "thirty million, seven hundred seventy-five thousand, seventy-two".