30120992 has 24 divisors (see below), whose sum is σ = 64692432. Its totient is φ = 13691200.

The previous prime is 30120973. The next prime is 30121001. The reversal of 30120992 is 29902103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42434 + ... + 43137.

It is an arithmetic number, because the mean of its divisors is an integer number (2695518).

Almost surely, 2^30120992 is an apocalyptic number.

30120992 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30120992 is an abundant number, since it is smaller than the sum of its proper divisors (34571440).

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

30120992 is a wasteful number, since it uses less digits than its factorization.

30120992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85592 (or 85584 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 30120992 is about 5488.2594690849. The cubic root of 30120992 is about 311.1404128108.

The spelling of 30120992 in words is "thirty million, one hundred twenty thousand, nine hundred ninety-two".