13801266 has 20 divisors (see below), whose sum is σ = 30925422. Its totient is φ = 4600368.

The previous prime is 13801261. The next prime is 13801273. The reversal of 13801266 is 66210831.

13801266 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11029041 + 2772225 = 3321^2 + 1665^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (13801261) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 42435 + ... + 42758.

Almost surely, 2^13801266 is an apocalyptic number.

13801266 is an abundant number, since it is smaller than the sum of its proper divisors (17124156).

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

13801266 is an equidigital number, since it uses as much as digits as its factorization.

13801266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85207 (or 85198 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 13801266 is about 3715.0055181655. The cubic root of 13801266 is about 239.8683653145.

The spelling of 13801266 in words is "thirteen million, eight hundred one thousand, two hundred sixty-six".