19900272 has 60 divisors (see below), whose sum is σ = 59809416. Its totient is φ = 5685120.

The previous prime is 19900261. The next prime is 19900289. The reversal of 19900272 is 27200991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1879 + ... + 6582.

Almost surely, 2^19900272 is an apocalyptic number.

19900272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19900272 is an abundant number, since it is smaller than the sum of its proper divisors (39909144).

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

19900272 is a wasteful number, since it uses less digits than its factorization.

19900272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8486 (or 8473 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 19900272 is about 4460.9720913720. The cubic root of 19900272 is about 270.9898372663.

The spelling of 19900272 in words is "nineteen million, nine hundred thousand, two hundred seventy-two".