194689028 has 6 divisors (see below), whose sum is σ = 340705806. Its totient is φ = 97344512.

The previous prime is 194689009. The next prime is 194689051. The reversal of 194689028 is 820986491.

It can be written as a sum of positive squares in only one way, i.e., 135675904 + 59013124 = 11648^2 + 7682^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24336125 + ... + 24336132.

It is an arithmetic number, because the mean of its divisors is an integer number (56784301).

Almost surely, 2^194689028 is an apocalyptic number.

It is an amenable number.

194689028 is a deficient number, since it is larger than the sum of its proper divisors (146016778).

194689028 is a wasteful number, since it uses less digits than its factorization.

194689028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48672261 (or 48672259 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 194689028 is about 13953.1010173366. The cubic root of 194689028 is about 579.5805806439.

The spelling of 194689028 in words is "one hundred ninety-four million, six hundred eighty-nine thousand, twenty-eight".