12387040 has 24 divisors (see below), whose sum is σ = 29264760. Its totient is φ = 4954752.

The previous prime is 12387029. The next prime is 12387059. The reversal of 12387040 is 4078321.

It is a junction number, because it is equal to n+sod(n) for n = 12386996 and 12387014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38550 + ... + 38869.

It is an arithmetic number, because the mean of its divisors is an integer number (1219365).

Almost surely, 2^12387040 is an apocalyptic number.

12387040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12387040 is an abundant number, since it is smaller than the sum of its proper divisors (16877720).

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

12387040 is an equidigital number, since it uses as much as digits as its factorization.

12387040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77434 (or 77426 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 12387040 is about 3519.5226949119. The cubic root of 12387040 is about 231.3782400472.

The spelling of 12387040 in words is "twelve million, three hundred eighty-seven thousand, forty".