13251890 has 16 divisors (see below), whose sum is σ = 23895000. Its totient is φ = 5291520.

The previous prime is 13251881. The next prime is 13251923. The reversal of 13251890 is 9815231.

It can be written as a sum of positive squares in 4 ways, for example, as 10962721 + 2289169 = 3311^2 + 1513^2 .

It is a super-2 number, since 2×13251890² = 351225177144200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9986 + ... + 11234.

Almost surely, 2^13251890 is an apocalyptic number.

13251890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13251890 is a deficient number, since it is larger than the sum of its proper divisors (10643110).

13251890 is a wasteful number, since it uses less digits than its factorization.

13251890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2317.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 13251890 is about 3640.3145468489. The cubic root of 13251890 is about 236.6424251659.

It can be divided in two parts, 13251 and 890, that added together give a palindrome (14141).

The spelling of 13251890 in words is "thirteen million, two hundred fifty-one thousand, eight hundred ninety".