30540940 has 12 divisors (see below), whose sum is σ = 64136016. Its totient is φ = 12216368.

The previous prime is 30540919. The next prime is 30540949. The reversal of 30540940 is 4904503.

It is not an unprimeable number, because it can be changed into a prime (30540949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 763504 + ... + 763543.

It is an arithmetic number, because the mean of its divisors is an integer number (5344668).

Almost surely, 2^30540940 is an apocalyptic number.

It is an amenable number.

30540940 is an abundant number, since it is smaller than the sum of its proper divisors (33595076).

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

30540940 is a wasteful number, since it uses less digits than its factorization.

30540940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1527056 (or 1527054 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 30540940 is about 5526.3857990553. The cubic root of 30540940 is about 312.5797215273.

The spelling of 30540940 in words is "thirty million, five hundred forty thousand, nine hundred forty".