194972628 has 12 divisors (see below), whose sum is σ = 454936160. Its totient is φ = 64990872.

The previous prime is 194972627. The next prime is 194972641. The reversal of 194972628 is 826279491.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194972627) 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, 8123848 + ... + 8123871.

Almost surely, 2^194972628 is an apocalyptic number.

It is an amenable number.

194972628 is an abundant number, since it is smaller than the sum of its proper divisors (259963532).

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

194972628 is a wasteful number, since it uses less digits than its factorization.

194972628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16247726 (or 16247724 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The square root of 194972628 is about 13963.2599345568. The cubic root of 194972628 is about 579.8618656377.

The spelling of 194972628 in words is "one hundred ninety-four million, nine hundred seventy-two thousand, six hundred twenty-eight".