13776018 has 16 divisors (see below), whose sum is σ = 29172960. Its totient is φ = 4321856.

The previous prime is 13776017. The next prime is 13776023. The reversal of 13776018 is 81067731.

It is a nialpdrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 13776018.

It is not an unprimeable number, because it can be changed into a prime (13776017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67428 + ... + 67631.

It is an arithmetic number, because the mean of its divisors is an integer number (1823310).

Almost surely, 2^13776018 is an apocalyptic number.

13776018 is an abundant number, since it is smaller than the sum of its proper divisors (15396942).

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

13776018 is a wasteful number, since it uses less digits than its factorization.

13776018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135081.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 13776018 is about 3711.6058519191. The cubic root of 13776018 is about 239.7220045070.

The spelling of 13776018 in words is "thirteen million, seven hundred seventy-six thousand, eighteen".