30775980 has 48 divisors (see below), whose sum is σ = 86413824. Its totient is φ = 8184000.

The previous prime is 30775957. The next prime is 30775999. The reversal of 30775980 is 8957703.

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, 40605 + ... + 41355.

It is an arithmetic number, because the mean of its divisors is an integer number (1800288).

Almost surely, 2^30775980 is an apocalyptic number.

30775980 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30775980 is an abundant number, since it is smaller than the sum of its proper divisors (55637844).

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

30775980 is a wasteful number, since it uses less digits than its factorization.

30775980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446 (or 1444 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 30775980 is about 5547.6102963348. The cubic root of 30775980 is about 313.3795339550.

The spelling of 30775980 in words is "thirty million, seven hundred seventy-five thousand, nine hundred eighty".