12540804 has 24 divisors (see below), whose sum is σ = 29759520. Its totient is φ = 4109184.

The previous prime is 12540799. The next prime is 12540809. The reversal of 12540804 is 40804521.

It is an interprime number because it is at equal distance from previous prime (12540799) and next prime (12540809).

It is not an unprimeable number, because it can be changed into a prime (12540809) 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, 8149 + ... + 9564.

It is an arithmetic number, because the mean of its divisors is an integer number (1239980).

Almost surely, 2^12540804 is an apocalyptic number.

It is an amenable number.

12540804 is an abundant number, since it is smaller than the sum of its proper divisors (17218716).

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

12540804 is a wasteful number, since it uses less digits than its factorization.

12540804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17779 (or 17777 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 12540804 is about 3541.2997613871. The cubic root of 12540804 is about 232.3316945890.

The spelling of 12540804 in words is "twelve million, five hundred forty thousand, eight hundred four".