30748970 has 24 divisors (see below), whose sum is σ = 64385604. Its totient is φ = 10542336.

The previous prime is 30748967. The next prime is 30748979. The reversal of 30748970 is 7984703.

It can be written as a sum of positive squares in 2 ways, for example, as 30658369 + 90601 = 5537^2 + 301^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30748979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30887 + ... + 31866.

Almost surely, 2^30748970 is an apocalyptic number.

30748970 is an abundant number, since it is smaller than the sum of its proper divisors (33636634).

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

30748970 is a wasteful number, since it uses less digits than its factorization.

30748970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62774 (or 62767 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 30748970 is about 5545.1753804546. The cubic root of 30748970 is about 313.2878297685.

The spelling of 30748970 in words is "thirty million, seven hundred forty-eight thousand, nine hundred seventy".