30799980 has 48 divisors (see below), whose sum is σ = 95823840. Its totient is φ = 8213184.

The previous prime is 30799973. The next prime is 30800009. The reversal of 30799980 is 8999703.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27979 + ... + 29058.

It is an arithmetic number, because the mean of its divisors is an integer number (1996330).

Almost surely, 2^30799980 is an apocalyptic number.

30799980 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30799980 is an abundant number, since it is smaller than the sum of its proper divisors (65023860).

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

30799980 is a wasteful number, since it uses less digits than its factorization.

30799980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57055 (or 57047 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 30799980 is about 5549.7729683294. The cubic root of 30799980 is about 313.4609735994.

The spelling of 30799980 in words is "thirty million, seven hundred ninety-nine thousand, nine hundred eighty".