19472988 has 12 divisors (see below), whose sum is σ = 45437000. Its totient is φ = 6490992.

The previous prime is 19472987. The next prime is 19473031. The reversal of 19472988 is 88927491.

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

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19472987) 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, 811363 + ... + 811386.

Almost surely, 2^19472988 is an apocalyptic number.

It is an amenable number.

19472988 is an abundant number, since it is smaller than the sum of its proper divisors (25964012).

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

19472988 is a wasteful number, since it uses less digits than its factorization.

19472988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622756 (or 1622754 counting only the distinct ones).

The product of its digits is 290304, while the sum is 48.

The square root of 19472988 is about 4412.8208665206. The cubic root of 19472988 is about 269.0362899774.

The spelling of 19472988 in words is "nineteen million, four hundred seventy-two thousand, nine hundred eighty-eight".