12516890 has 16 divisors (see below), whose sum is σ = 23080680. Its totient is φ = 4884480.

The previous prime is 12516887. The next prime is 12516929. The reversal of 12516890 is 9861521.

It can be written as a sum of positive squares in 4 ways, for example, as 2474329 + 10042561 = 1573^2 + 3169^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14855 + ... + 15674.

Almost surely, 2^12516890 is an apocalyptic number.

12516890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12516890 is a deficient number, since it is larger than the sum of its proper divisors (10563790).

12516890 is a wasteful number, since it uses less digits than its factorization.

12516890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30577.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 12516890 is about 3537.9217063129. The cubic root of 12516890 is about 232.1839232168.

The spelling of 12516890 in words is "twelve million, five hundred sixteen thousand, eight hundred ninety".