194225904 has 80 divisors (see below), whose sum is σ = 586867200. Its totient is φ = 61331904.

The previous prime is 194225903. The next prime is 194225909. The reversal of 194225904 is 409522491.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194225903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3624 + ... + 20039.

It is an arithmetic number, because the mean of its divisors is an integer number (7335840).

Almost surely, 2^194225904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194225904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293433600).

194225904 is an abundant number, since it is smaller than the sum of its proper divisors (392641296).

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

194225904 is a wasteful number, since it uses less digits than its factorization.

194225904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23699 (or 23687 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 194225904 is about 13936.4953987722. The cubic root of 194225904 is about 579.1206492385.

The spelling of 194225904 in words is "one hundred ninety-four million, two hundred twenty-five thousand, nine hundred four".