19408992 has 48 divisors (see below), whose sum is σ = 51275952. Its totient is φ = 6428160.

The previous prime is 19408981. The next prime is 19408997. The reversal of 19408992 is 29980491.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19408997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16818 + ... + 17934.

It is an arithmetic number, because the mean of its divisors is an integer number (1068249).

Almost surely, 2^19408992 is an apocalyptic number.

19408992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19408992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25637976).

19408992 is an abundant number, since it is smaller than the sum of its proper divisors (31866960).

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

19408992 is a wasteful number, since it uses less digits than its factorization.

19408992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311 (or 1303 counting only the distinct ones).

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

The square root of 19408992 is about 4405.5637550715. The cubic root of 19408992 is about 268.7412463707.

The spelling of 19408992 in words is "nineteen million, four hundred eight thousand, nine hundred ninety-two".