404242552 has 24 divisors (see below), whose sum is σ = 881703360. Its totient is φ = 173246640.

The previous prime is 404242529. The next prime is 404242561. The reversal of 404242552 is 255242404.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 404242552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 515224 + ... + 516007.

It is an arithmetic number, because the mean of its divisors is an integer number (36737640).

Almost surely, 2^404242552 is an apocalyptic number.

It is an amenable number.

404242552 is an abundant number, since it is smaller than the sum of its proper divisors (477460808).

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

404242552 is a wasteful number, since it uses less digits than its factorization.

404242552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031251 (or 1031240 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 28.

The square root of 404242552 is about 20105.7840434040. The cubic root of 404242552 is about 739.4020931216.

Adding to 404242552 its reverse (255242404), we get a palindrome (659484956).

The spelling of 404242552 in words is "four hundred four million, two hundred forty-two thousand, five hundred fifty-two".