12587490 has 24 divisors (see below), whose sum is σ = 32727708. Its totient is φ = 3356640.

The previous prime is 12587467. The next prime is 12587501. The reversal of 12587490 is 9478521.

It can be written as a sum of positive squares in 2 ways, for example, as 11553201 + 1034289 = 3399^2 + 1017^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69841 + ... + 70020.

Almost surely, 2^12587490 is an apocalyptic number.

12587490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12587490 is an abundant number, since it is smaller than the sum of its proper divisors (20140218).

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

12587490 is a wasteful number, since it uses less digits than its factorization.

12587490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139874 (or 139871 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 12587490 is about 3547.8852856314. The cubic root of 12587490 is about 232.6196401245.

The spelling of 12587490 in words is "twelve million, five hundred eighty-seven thousand, four hundred ninety".