252401998 has 32 divisors (see below), whose sum is σ = 394421760. Its totient is φ = 121080960.

The previous prime is 252401971. The next prime is 252401999. The reversal of 252401998 is 899104252.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 252401998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252401999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1196113 + ... + 1196323.

It is an arithmetic number, because the mean of its divisors is an integer number (12325680).

Almost surely, 2^252401998 is an apocalyptic number.

252401998 is a deficient number, since it is larger than the sum of its proper divisors (142019762).

252401998 is a wasteful number, since it uses less digits than its factorization.

252401998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 252401998 is about 15887.1645676628. The cubic root of 252401998 is about 631.9716495721.

The spelling of 252401998 in words is "two hundred fifty-two million, four hundred one thousand, nine hundred ninety-eight".