30775248 has 80 divisors (see below), whose sum is σ = 100965760. Its totient is φ = 8792064.

The previous prime is 30775247. The next prime is 30775259. The reversal of 30775248 is 84257703.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30775243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2065 + ... + 8112.

It is an arithmetic number, because the mean of its divisors is an integer number (1262072).

Almost surely, 2^30775248 is an apocalyptic number.

It is an amenable number.

30775248 is an abundant number, since it is smaller than the sum of its proper divisors (70190512).

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

30775248 is a wasteful number, since it uses less digits than its factorization.

30775248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10201 (or 10189 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 30775248 is about 5547.5443215895. The cubic root of 30775248 is about 313.3770493806.

The spelling of 30775248 in words is "thirty million, seven hundred seventy-five thousand, two hundred forty-eight".