12987401 has 12 divisors (see below), whose sum is σ = 15234048. Its totient is φ = 11039112.

The previous prime is 12987397. The next prime is 12987409. The reversal of 12987401 is 10478921.

It is not a de Polignac number, because 12987401 - 2² = 12987397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12987409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5180 + ... + 7266.

It is an arithmetic number, because the mean of its divisors is an integer number (1269504).

Almost surely, 2^12987401 is an apocalyptic number.

It is an amenable number.

12987401 is a deficient number, since it is larger than the sum of its proper divisors (2246647).

12987401 is a wasteful number, since it uses less digits than its factorization.

12987401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2228 (or 2221 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 12987401 is about 3603.8036849973. The cubic root of 12987401 is about 235.0574840513.

The spelling of 12987401 in words is "twelve million, nine hundred eighty-seven thousand, four hundred one".