194523040 has 24 divisors (see below), whose sum is σ = 459561060. Its totient is φ = 77809152.

The previous prime is 194523037. The next prime is 194523041. The reversal of 194523040 is 40325491.

It can be written as a sum of positive squares in 2 ways, for example, as 178169104 + 16353936 = 13348^2 + 4044^2 .

It is not an unprimeable number, because it can be changed into a prime (194523041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 607725 + ... + 608044.

Almost surely, 2^194523040 is an apocalyptic number.

194523040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194523040 is an abundant number, since it is smaller than the sum of its proper divisors (265038020).

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

194523040 is a wasteful number, since it uses less digits than its factorization.

194523040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215784 (or 1215776 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 194523040 is about 13947.1516805404. The cubic root of 194523040 is about 579.4158208460.

The spelling of 194523040 in words is "one hundred ninety-four million, five hundred twenty-three thousand, forty".