19842492 has 12 divisors (see below), whose sum is σ = 46299176. Its totient is φ = 6614160.

The previous prime is 19842463. The next prime is 19842499. The reversal of 19842492 is 29424891.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 19842492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19842499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 826759 + ... + 826782.

Almost surely, 2^19842492 is an apocalyptic number.

19842492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19842492 is an abundant number, since it is smaller than the sum of its proper divisors (26456684).

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

19842492 is a wasteful number, since it uses less digits than its factorization.

19842492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653548 (or 1653546 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 19842492 is about 4454.4912167385. The cubic root of 19842492 is about 270.7273120220.

The spelling of 19842492 in words is "nineteen million, eight hundred forty-two thousand, four hundred ninety-two".