188740434 has 8 divisors (see below), whose sum is σ = 377480880. Its totient is φ = 62913476.

The previous prime is 188740429. The next prime is 188740481. The reversal of 188740434 is 434047881.

It is a sphenic number, since it is the product of 3 distinct primes.

188740434 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 188740392 and 188740401.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15728364 + ... + 15728375.

It is an arithmetic number, because the mean of its divisors is an integer number (47185110).

Almost surely, 2^188740434 is an apocalyptic number.

188740434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

188740434 is a wasteful number, since it uses less digits than its factorization.

188740434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31456744.

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 188740434 is about 13738.2835172375. The cubic root of 188740434 is about 573.6165191833.

The spelling of 188740434 in words is "one hundred eighty-eight million, seven hundred forty thousand, four hundred thirty-four".