404345532 has 24 divisors (see below), whose sum is σ = 943837776. Its totient is φ = 134729728.

The previous prime is 404345531. The next prime is 404345537. The reversal of 404345532 is 235543404.

It is a self number, because there is not a number n which added to its sum of digits gives 404345532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404345531) 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, 37948 + ... + 47420.

It is an arithmetic number, because the mean of its divisors is an integer number (39326574).

Almost surely, 2^404345532 is an apocalyptic number.

It is an amenable number.

404345532 is an abundant number, since it is smaller than the sum of its proper divisors (539492244).

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

404345532 is a wasteful number, since it uses less digits than its factorization.

404345532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13037 (or 13035 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 30.

The square root of 404345532 is about 20108.3448349187. The cubic root of 404345532 is about 739.4648748700.

Adding to 404345532 its reverse (235543404), we get a palindrome (639888936).

The spelling of 404345532 in words is "four hundred four million, three hundred forty-five thousand, five hundred thirty-two".