19976228 has 12 divisors (see below), whose sum is σ = 35351820. Its totient is φ = 9875712.

The previous prime is 19976179. The next prime is 19976237. The reversal of 19976228 is 82267991.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1036324 + 18939904 = 1018^2 + 4352^2 .

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, 27701 + ... + 28412.

It is an arithmetic number, because the mean of its divisors is an integer number (2945985).

Almost surely, 2^19976228 is an apocalyptic number.

It is an amenable number.

19976228 is a deficient number, since it is larger than the sum of its proper divisors (15375592).

19976228 is a wasteful number, since it uses less digits than its factorization.

19976228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56206 (or 56204 counting only the distinct ones).

The product of its digits is 108864, while the sum is 44.

The square root of 19976228 is about 4469.4773743694. The cubic root of 19976228 is about 271.3341737959.

The spelling of 19976228 in words is "nineteen million, nine hundred seventy-six thousand, two hundred twenty-eight".