404155252 has 12 divisors (see below), whose sum is σ = 731660580. Its totient is φ = 195109376.

The previous prime is 404155247. The next prime is 404155259. The reversal of 404155252 is 252551404.

It can be written as a sum of positive squares in 2 ways, for example, as 130782096 + 273373156 = 11436^2 + 16534^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 404155252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404155259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1741933 + ... + 1742164.

It is an arithmetic number, because the mean of its divisors is an integer number (60971715).

Almost surely, 2^404155252 is an apocalyptic number.

It is an amenable number.

404155252 is a deficient number, since it is larger than the sum of its proper divisors (327505328).

404155252 is a wasteful number, since it uses less digits than its factorization.

404155252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3484130 (or 3484128 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 404155252 is about 20103.6129091266. The cubic root of 404155252 is about 739.3488623325.

The spelling of 404155252 in words is "four hundred four million, one hundred fifty-five thousand, two hundred fifty-two".