194534440 has 32 divisors (see below), whose sum is σ = 439920000. Its totient is φ = 77419584.

The previous prime is 194534413. The next prime is 194534447. The reversal of 194534440 is 44435491.

It is a super-2 number, since 2×194534440² = 75687296692227200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 194534396 and 194534405.

It is not an unprimeable number, because it can be changed into a prime (194534447) 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, 4260 + ... + 20179.

It is an arithmetic number, because the mean of its divisors is an integer number (13747500).

Almost surely, 2^194534440 is an apocalyptic number.

194534440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194534440 is an abundant number, since it is smaller than the sum of its proper divisors (245385560).

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

194534440 is a wasteful number, since it uses less digits than its factorization.

194534440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24649 (or 24645 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 194534440 is about 13947.5603601490. The cubic root of 194534440 is about 579.4271394903.

The spelling of 194534440 in words is "one hundred ninety-four million, five hundred thirty-four thousand, four hundred forty".