13421727 has 16 divisors (see below), whose sum is σ = 21692160. Its totient is φ = 8134200.

The previous prime is 13421717. The next prime is 13421731. The reversal of 13421727 is 72712431.

It is a happy number.

It is not a de Polignac number, because 13421727 - 2⁴ = 13421711 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 13421727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13421717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22299 + ... + 22892.

It is an arithmetic number, because the mean of its divisors is an integer number (1355760).

Almost surely, 2^13421727 is an apocalyptic number.

13421727 is a deficient number, since it is larger than the sum of its proper divisors (8270433).

13421727 is a wasteful number, since it uses less digits than its factorization.

13421727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45211 (or 45205 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 13421727 is about 3663.5675236032. The cubic root of 13421727 is about 237.6490779652.

The spelling of 13421727 in words is "thirteen million, four hundred twenty-one thousand, seven hundred twenty-seven".