194007920 has 40 divisors (see below), whose sum is σ = 465624960. Its totient is φ = 75098880.

The previous prime is 194007907. The next prime is 194007929. The reversal of 194007920 is 29700491.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194007929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36635 + ... + 41594.

It is an arithmetic number, because the mean of its divisors is an integer number (11640624).

Almost surely, 2^194007920 is an apocalyptic number.

194007920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194007920 is an abundant number, since it is smaller than the sum of its proper divisors (271617040).

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

194007920 is a wasteful number, since it uses less digits than its factorization.

194007920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78273 (or 78267 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 194007920 is about 13928.6725857133. The cubic root of 194007920 is about 578.9039148595.

The spelling of 194007920 in words is "one hundred ninety-four million, seven thousand, nine hundred twenty".