30750645 has 16 divisors (see below), whose sum is σ = 51791040. Its totient is φ = 15537024.

The previous prime is 30750631. The next prime is 30750647. The reversal of 30750645 is 54605703.

It is not a de Polignac number, because 30750645 - 2⁵ = 30750613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30750647) 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, 53664 + ... + 54233.

It is an arithmetic number, because the mean of its divisors is an integer number (3236940).

Almost surely, 2^30750645 is an apocalyptic number.

It is an amenable number.

30750645 is a deficient number, since it is larger than the sum of its proper divisors (21040395).

30750645 is a wasteful number, since it uses less digits than its factorization.

30750645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107924.

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 30750645 is about 5545.3264105912. The cubic root of 30750645 is about 313.2935182798.

The spelling of 30750645 in words is "thirty million, seven hundred fifty thousand, six hundred forty-five".