19948980 has 48 divisors (see below), whose sum is σ = 56052864. Its totient is φ = 5301120.

The previous prime is 19948979. The next prime is 19948991. The reversal of 19948980 is 8984991.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 29850 + ... + 30510.

It is an arithmetic number, because the mean of its divisors is an integer number (1167768).

Almost surely, 2^19948980 is an apocalyptic number.

19948980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19948980 is an abundant number, since it is smaller than the sum of its proper divisors (36103884).

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

19948980 is a wasteful number, since it uses less digits than its factorization.

19948980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176 (or 1174 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 48.

The square root of 19948980 is about 4466.4281030819. The cubic root of 19948980 is about 271.2107491323.

The spelling of 19948980 in words is "nineteen million, nine hundred forty-eight thousand, nine hundred eighty".