13788147 has 16 divisors (see below), whose sum is σ = 18796320. Its totient is φ = 8988672.

The previous prime is 13788119. The next prime is 13788157. The reversal of 13788147 is 74188731.

It is not a de Polignac number, because 13788147 - 2⁶ = 13788083 is a prime.

It is a super-2 number, since 2×13788147² = 380225995387218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13788157) 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, 29943 + ... + 30399.

It is an arithmetic number, because the mean of its divisors is an integer number (1174770).

Almost surely, 2^13788147 is an apocalyptic number.

13788147 is a deficient number, since it is larger than the sum of its proper divisors (5008173).

13788147 is a wasteful number, since it uses less digits than its factorization.

13788147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662.

The product of its digits is 37632, while the sum is 39.

The square root of 13788147 is about 3713.2394213140. The cubic root of 13788147 is about 239.7923377312.

The spelling of 13788147 in words is "thirteen million, seven hundred eighty-eight thousand, one hundred forty-seven".