30172980 has 24 divisors (see below), whose sum is σ = 84484512. Its totient is φ = 8046112.

The previous prime is 30172973. The next prime is 30172999. The reversal of 30172980 is 8927103.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251382 + ... + 251501.

It is an arithmetic number, because the mean of its divisors is an integer number (3520188).

Almost surely, 2^30172980 is an apocalyptic number.

30172980 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30172980 is an abundant number, since it is smaller than the sum of its proper divisors (54311532).

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

30172980 is a wasteful number, since it uses less digits than its factorization.

30172980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502895 (or 502893 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 30172980 is about 5492.9937192755. The cubic root of 30172980 is about 311.3193165081.

The spelling of 30172980 in words is "thirty million, one hundred seventy-two thousand, nine hundred eighty".