404020532 has 6 divisors (see below), whose sum is σ = 707035938. Its totient is φ = 202010264.

The previous prime is 404020531. The next prime is 404020543. The reversal of 404020532 is 235020404.

It can be written as a sum of positive squares in only one way, i.e., 401441296 + 2579236 = 20036^2 + 1606^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404020531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50502563 + ... + 50502570.

It is an arithmetic number, because the mean of its divisors is an integer number (117839323).

Almost surely, 2^404020532 is an apocalyptic number.

It is an amenable number.

404020532 is a deficient number, since it is larger than the sum of its proper divisors (303015406).

404020532 is a wasteful number, since it uses less digits than its factorization.

404020532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101005137 (or 101005135 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 404020532 is about 20100.2619883423. The cubic root of 404020532 is about 739.2667023642.

Adding to 404020532 its reverse (235020404), we get a palindrome (639040936).

The spelling of 404020532 in words is "four hundred four million, twenty thousand, five hundred thirty-two".