30799880 has 16 divisors (see below), whose sum is σ = 69299820. Its totient is φ = 12319936.

The previous prime is 30799861. The next prime is 30799883. The reversal of 30799880 is 8899703.

It can be written as a sum of positive squares in 2 ways, for example, as 30625156 + 174724 = 5534^2 + 418^2 .

It is not an unprimeable number, because it can be changed into a prime (30799883) 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, 384959 + ... + 385038.

Almost surely, 2^30799880 is an apocalyptic number.

It is an amenable number.

30799880 is an abundant number, since it is smaller than the sum of its proper divisors (38499940).

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

30799880 is a wasteful number, since it uses less digits than its factorization.

30799880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770008 (or 770004 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 30799880 is about 5549.7639589446. The cubic root of 30799880 is about 313.4606343553.

The spelling of 30799880 in words is "thirty million, seven hundred ninety-nine thousand, eight hundred eighty".