13456890 has 24 divisors (see below), whose sum is σ = 34988148. Its totient is φ = 3588480.

The previous prime is 13456879. The next prime is 13456901. The reversal of 13456890 is 9865431.

13456890 is a `hidden beast` number, since 1 + 3 + 4 + 568 + 90 = 666.

It is an interprime number because it is at equal distance from previous prime (13456879) and next prime (13456901).

It can be written as a sum of positive squares in 2 ways, for example, as 12766329 + 690561 = 3573^2 + 831^2 .

It is a Curzon number.

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, 74671 + ... + 74850.

Almost surely, 2^13456890 is an apocalyptic number.

13456890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13456890 is an abundant number, since it is smaller than the sum of its proper divisors (21531258).

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

13456890 is a wasteful number, since it uses less digits than its factorization.

13456890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149534 (or 149531 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 13456890 is about 3668.3633953031. The cubic root of 13456890 is about 237.8564324921.

The spelling of 13456890 in words is "thirteen million, four hundred fifty-six thousand, eight hundred ninety".