415520404 has 48 divisors (see below), whose sum is σ = 828205056. Its totient is φ = 181036800.

The previous prime is 415520393. The next prime is 415520407. The reversal of 415520404 is 404025514.

It is a happy number.

It is a super-2 number, since 2×415520404² = 345314412280646432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (415520407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62949 + ... + 69235.

It is an arithmetic number, because the mean of its divisors is an integer number (17254272).

Almost surely, 2^415520404 is an apocalyptic number.

It is an amenable number.

415520404 is a deficient number, since it is larger than the sum of its proper divisors (412684652).

415520404 is a wasteful number, since it uses less digits than its factorization.

415520404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6376 (or 6374 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 415520404 is about 20384.3175995666. The cubic root of 415520404 is about 746.2152464626.

Adding to 415520404 its reverse (404025514), we get a palindrome (819545918).

The spelling of 415520404 in words is "four hundred fifteen million, five hundred twenty thousand, four hundred four".