13778052 has 12 divisors (see below), whose sum is σ = 32148816. Its totient is φ = 4592680.

The previous prime is 13778033. The next prime is 13778053. The reversal of 13778052 is 25087731.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (13778053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574074 + ... + 574097.

It is an arithmetic number, because the mean of its divisors is an integer number (2679068).

Almost surely, 2^13778052 is an apocalyptic number.

13778052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13778052 is an abundant number, since it is smaller than the sum of its proper divisors (18370764).

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

13778052 is a wasteful number, since it uses less digits than its factorization.

13778052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148178 (or 1148176 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 13778052 is about 3711.8798471933. The cubic root of 13778052 is about 239.7338020758.

The spelling of 13778052 in words is "thirteen million, seven hundred seventy-eight thousand, fifty-two".