30973770 has 24 divisors (see below), whose sum is σ = 80532036. Its totient is φ = 8259648.

The previous prime is 30973759. The next prime is 30973777. The reversal of 30973770 is 7737903.

It can be written as a sum of positive squares in 2 ways, for example, as 30902481 + 71289 = 5559^2 + 267^2 .

It is not an unprimeable number, because it can be changed into a prime (30973777) 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, 171987 + ... + 172166.

Almost surely, 2^30973770 is an apocalyptic number.

30973770 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30973770 is an abundant number, since it is smaller than the sum of its proper divisors (49558266).

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

30973770 is a wasteful number, since it uses less digits than its factorization.

30973770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344166 (or 344163 counting only the distinct ones).

The product of its (nonzero) digits is 27783, while the sum is 36.

The square root of 30973770 is about 5565.4083408138. The cubic root of 30973770 is about 314.0494397925.

The spelling of 30973770 in words is "thirty million, nine hundred seventy-three thousand, seven hundred seventy".