30745938 has 32 divisors (see below), whose sum is σ = 62613504. Its totient is φ = 10063872.

The previous prime is 30745937. The next prime is 30745961. The reversal of 30745938 is 83954703.

It is a junction number, because it is equal to n+sod(n) for n = 30745896 and 30745905.

It is not an unprimeable number, because it can be changed into a prime (30745937) 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, 119506 + ... + 119762.

It is an arithmetic number, because the mean of its divisors is an integer number (1956672).

Almost surely, 2^30745938 is an apocalyptic number.

30745938 is an abundant number, since it is smaller than the sum of its proper divisors (31867566).

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

30745938 is a wasteful number, since it uses less digits than its factorization.

30745938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 30745938 is about 5544.9019829029. The cubic root of 30745938 is about 313.2775321887.

The spelling of 30745938 in words is "thirty million, seven hundred forty-five thousand, nine hundred thirty-eight".