30980940 has 24 divisors (see below), whose sum is σ = 86746800. Its totient is φ = 8261568.

The previous prime is 30980933. The next prime is 30980947. The reversal of 30980940 is 4908903.

It is an interprime number because it is at equal distance from previous prime (30980933) and next prime (30980947).

It is not an unprimeable number, because it can be changed into a prime (30980947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258115 + ... + 258234.

It is an arithmetic number, because the mean of its divisors is an integer number (3614450).

Almost surely, 2^30980940 is an apocalyptic number.

30980940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30980940 is an abundant number, since it is smaller than the sum of its proper divisors (55765860).

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

30980940 is a wasteful number, since it uses less digits than its factorization.

30980940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516361 (or 516359 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 30980940 is about 5566.0524611254. The cubic root of 30980940 is about 314.0736706257.

The spelling of 30980940 in words is "thirty million, nine hundred eighty thousand, nine hundred forty".