19992480 has 48 divisors (see below), whose sum is σ = 62977824. Its totient is φ = 5331200.

The previous prime is 19992457. The next prime is 19992491. The reversal of 19992480 is 8429991.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20346 + ... + 21305.

It is an arithmetic number, because the mean of its divisors is an integer number (1312038).

Almost surely, 2^19992480 is an apocalyptic number.

19992480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19992480 is an abundant number, since it is smaller than the sum of its proper divisors (42985344).

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

19992480 is a wasteful number, since it uses less digits than its factorization.

19992480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41669 (or 41661 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 19992480 is about 4471.2951143936. The cubic root of 19992480 is about 271.4077366939.

The spelling of 19992480 in words is "nineteen million, nine hundred ninety-two thousand, four hundred eighty".