19955672 has 16 divisors (see below), whose sum is σ = 40818600. Its totient is φ = 9070720.

The previous prime is 19955653. The next prime is 19955711. The reversal of 19955672 is 27655991.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113297 + ... + 113472.

Almost surely, 2^19955672 is an apocalyptic number.

It is an amenable number.

19955672 is an abundant number, since it is smaller than the sum of its proper divisors (20862928).

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

19955672 is a wasteful number, since it uses less digits than its factorization.

19955672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226786 (or 226782 counting only the distinct ones).

The product of its digits is 170100, while the sum is 44.

The square root of 19955672 is about 4467.1771847555. The cubic root of 19955672 is about 271.2410721435.

It can be divided in two parts, 1995 and 5672, that added together give a palindrome (7667).

The spelling of 19955672 in words is "nineteen million, nine hundred fifty-five thousand, six hundred seventy-two".