404500020 has 48 divisors (see below), whose sum is σ = 1136825088. Its totient is φ = 107464320.

The previous prime is 404500013. The next prime is 404500043. The reversal of 404500020 is 20005404.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3822 + ... + 28698.

It is an arithmetic number, because the mean of its divisors is an integer number (23683856).

Almost surely, 2^404500020 is an apocalyptic number.

It is an amenable number.

404500020 is an abundant number, since it is smaller than the sum of its proper divisors (732325068).

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

404500020 is a wasteful number, since it uses less digits than its factorization.

404500020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25160 (or 25158 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 404500020 is about 20112.1858583298. The cubic root of 404500020 is about 739.5590384790.

Adding to 404500020 its reverse (20005404), we get a palindrome (424505424).

The spelling of 404500020 in words is "four hundred four million, five hundred thousand, twenty".