13266890 has 64 divisors (see below), whose sum is σ = 29998080. Its totient is φ = 4112640.

The previous prime is 13266889. The next prime is 13266901. The reversal of 13266890 is 9866231.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13266890.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55391 + ... + 55629.

It is an arithmetic number, because the mean of its divisors is an integer number (468720).

Almost surely, 2^13266890 is an apocalyptic number.

13266890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13266890 is an abundant number, since it is smaller than the sum of its proper divisors (16731190).

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

13266890 is a wasteful number, since it uses less digits than its factorization.

13266890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 13266890 is about 3642.3742256940. The cubic root of 13266890 is about 236.7316777914.

The spelling of 13266890 in words is "thirteen million, two hundred sixty-six thousand, eight hundred ninety".