19967650228 has 12 divisors (see below), whose sum is σ = 34945379392. Its totient is φ = 9983256120.

The previous prime is 19967650211. The next prime is 19967650253. The reversal of 19967650228 is 82205676991.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

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, 57708 + ... + 208003.

Almost surely, 2^19967650228 is an apocalyptic number.

It is an amenable number.

19967650228 is a deficient number, since it is larger than the sum of its proper divisors (14977729164).

19967650228 is a wasteful number, since it uses less digits than its factorization.

19967650228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284502 (or 284500 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 55.

The spelling of 19967650228 in words is "nineteen billion, nine hundred sixty-seven million, six hundred fifty thousand, two hundred twenty-eight".