194005872 has 30 divisors (see below), whose sum is σ = 542947392. Its totient is φ = 64668576.

The previous prime is 194005841. The next prime is 194005883. The reversal of 194005872 is 278500491.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 673488 + ... + 673775.

Almost surely, 2^194005872 is an apocalyptic number.

194005872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

194005872 is an abundant number, since it is smaller than the sum of its proper divisors (348941520).

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

194005872 is a wasteful number, since it uses less digits than its factorization.

194005872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347277 (or 1347268 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 194005872 is about 13928.5990681044. The cubic root of 194005872 is about 578.9018778304.

The spelling of 194005872 in words is "one hundred ninety-four million, five thousand, eight hundred seventy-two".