30750528 has 28 divisors (see below), whose sum is σ = 81361280. Its totient is φ = 10250112.

The previous prime is 30750509. The next prime is 30750539. The reversal of 30750528 is 82505703.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30750495 and 30750504.

It is a congruent number.

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, 79888 + ... + 80271.

It is an arithmetic number, because the mean of its divisors is an integer number (2905760).

Almost surely, 2^30750528 is an apocalyptic number.

It is an amenable number.

30750528 is an abundant number, since it is smaller than the sum of its proper divisors (50610752).

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

30750528 is a wasteful number, since it uses less digits than its factorization.

30750528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160174 (or 160164 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 30750528 is about 5545.3158611571. The cubic root of 30750528 is about 313.2931209398.

The spelling of 30750528 in words is "thirty million, seven hundred fifty thousand, five hundred twenty-eight".