19892992 has 72 divisors (see below), whose sum is σ = 48123936. Its totient is φ = 8011776.

The previous prime is 19892989. The next prime is 19893007. The reversal of 19892992 is 29929891.

It is a happy number.

It is a super-2 number, since 2×19892992² = 791462261424128, which contains 22 as substring.

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, 30138 + ... + 30790.

It is an arithmetic number, because the mean of its divisors is an integer number (668388).

Almost surely, 2^19892992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19892992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24061968).

19892992 is an abundant number, since it is smaller than the sum of its proper divisors (28230944).

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

19892992 is an equidigital number, since it uses as much as digits as its factorization.

19892992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693 (or 679 counting only the distinct ones).

The product of its digits is 209952, while the sum is 49.

The square root of 19892992 is about 4460.1560510816. The cubic root of 19892992 is about 270.9567883608.

The spelling of 19892992 in words is "nineteen million, eight hundred ninety-two thousand, nine hundred ninety-two".