404721852 has 24 divisors (see below), whose sum is σ = 951148800. Its totient is φ = 133936176.

The previous prime is 404721851. The next prime is 404721853. The reversal of 404721852 is 258127404.

It is an interprime number because it is at equal distance from previous prime (404721851) and next prime (404721853).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404721851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119652 + ... + 122987.

It is an arithmetic number, because the mean of its divisors is an integer number (39631200).

Almost surely, 2^404721852 is an apocalyptic number.

It is an amenable number.

404721852 is an abundant number, since it is smaller than the sum of its proper divisors (546426948).

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

404721852 is a wasteful number, since it uses less digits than its factorization.

404721852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242785 (or 242783 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 404721852 is about 20117.6999679387. The cubic root of 404721852 is about 739.6942077178.

It can be divided in two parts, 40472 and 1852, that added together give a palindrome (42324).

The spelling of 404721852 in words is "four hundred four million, seven hundred twenty-one thousand, eight hundred fifty-two".