252690194 has 8 divisors (see below), whose sum is σ = 379229808. Its totient is φ = 126280260.

The previous prime is 252690173. The next prime is 252690197. The reversal of 252690194 is 491096252.

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

It is not an unprimeable number, because it can be changed into a prime (252690197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27392 + ... + 35435.

It is an arithmetic number, because the mean of its divisors is an integer number (47403726).

Almost surely, 2^252690194 is an apocalyptic number.

252690194 is a deficient number, since it is larger than the sum of its proper divisors (126539614).

252690194 is a wasteful number, since it uses less digits than its factorization.

252690194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64840.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 252690194 is about 15896.2320692672. The cubic root of 252690194 is about 632.2120893293.

The spelling of 252690194 in words is "two hundred fifty-two million, six hundred ninety thousand, one hundred ninety-four".