30440940 has 24 divisors (see below), whose sum is σ = 85234800. Its totient is φ = 8117568.

The previous prime is 30440939. The next prime is 30440959. The reversal of 30440940 is 4904403.

It is a self number, because there is not a number n which added to its sum of digits gives 30440940.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253615 + ... + 253734.

It is an arithmetic number, because the mean of its divisors is an integer number (3551450).

Almost surely, 2^30440940 is an apocalyptic number.

30440940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30440940 is an abundant number, since it is smaller than the sum of its proper divisors (54793860).

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

30440940 is a wasteful number, since it uses less digits than its factorization.

30440940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507361 (or 507359 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 30440940 is about 5517.3308764293. The cubic root of 30440940 is about 312.2381892510.

The spelling of 30440940 in words is "thirty million, four hundred forty thousand, nine hundred forty".