253670394 has 8 divisors (see below), whose sum is σ = 507340800. Its totient is φ = 84556796.

The previous prime is 253670371. The next prime is 253670467. The reversal of 253670394 is 493076352.

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

253670394 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21139194 + ... + 21139205.

It is an arithmetic number, because the mean of its divisors is an integer number (63417600).

Almost surely, 2^253670394 is an apocalyptic number.

253670394 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.

253670394 is a wasteful number, since it uses less digits than its factorization.

253670394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42278404.

The product of its (nonzero) digits is 136080, while the sum is 39.

The square root of 253670394 is about 15927.0334337566. The cubic root of 253670394 is about 633.0284971286.

The spelling of 253670394 in words is "two hundred fifty-three million, six hundred seventy thousand, three hundred ninety-four".