30540920 has 16 divisors (see below), whose sum is σ = 68717160. Its totient is φ = 12216352.

The previous prime is 30540919. The next prime is 30540949. The reversal of 30540920 is 2904503.

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, 381722 + ... + 381801.

Almost surely, 2^30540920 is an apocalyptic number.

It is an amenable number.

30540920 is an abundant number, since it is smaller than the sum of its proper divisors (38176240).

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

30540920 is a wasteful number, since it uses less digits than its factorization.

30540920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763534 (or 763530 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 30540920 is about 5526.3839895541. The cubic root of 30540920 is about 312.5796532954.

The spelling of 30540920 in words is "thirty million, five hundred forty thousand, nine hundred twenty".