19204872 has 64 divisors (see below), whose sum is σ = 50319360. Its totient is φ = 6100800.

The previous prime is 19204853. The next prime is 19204891. The reversal of 19204872 is 27840291.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (19204853) and next prime (19204891).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61597 + ... + 61907.

It is an arithmetic number, because the mean of its divisors is an integer number (786240).

Almost surely, 2^19204872 is an apocalyptic number.

19204872 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 19204872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25159680).

19204872 is an abundant number, since it is smaller than the sum of its proper divisors (31114488).

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

19204872 is a wasteful number, since it uses less digits than its factorization.

19204872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434 (or 430 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 19204872 is about 4382.3363631743. The cubic root of 19204872 is about 267.7958272655.

The spelling of 19204872 in words is "nineteen million, two hundred four thousand, eight hundred seventy-two".