10405504 has 16 divisors (see below), whose sum is σ = 20729970. Its totient is φ = 5202688.

The previous prime is 10405501. The next prime is 10405523. The reversal of 10405504 is 40550401.

It can be written as a sum of positive squares in only one way, i.e., 9985600 + 419904 = 3160^2 + 648^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (10405501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40519 + ... + 40774.

Almost surely, 2^10405504 is an apocalyptic number.

It is an amenable number.

10405504 is a deficient number, since it is larger than the sum of its proper divisors (10324466).

10405504 is an frugal number, since it uses more digits than its factorization.

10405504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81307 (or 81295 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 10405504 is about 3225.7563454173. The cubic root of 10405504 is about 218.3170764009.

Adding to 10405504 its reverse (40550401), we get a palindrome (50955905).

The spelling of 10405504 in words is "ten million, four hundred five thousand, five hundred four".