13897512 has 48 divisors (see below), whose sum is σ = 39624000. Its totient is φ = 4388256.

The previous prime is 13897511. The next prime is 13897523. The reversal of 13897512 is 21579831.

13897512 is a `hidden beast` number, since 138 + 9 + 7 + 512 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (13897511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3712 + ... + 6447.

It is an arithmetic number, because the mean of its divisors is an integer number (825500).

Almost surely, 2^13897512 is an apocalyptic number.

13897512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13897512 is an abundant number, since it is smaller than the sum of its proper divisors (25726488).

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

13897512 is a wasteful number, since it uses less digits than its factorization.

13897512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10190 (or 10183 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 13897512 is about 3727.9366947415. The cubic root of 13897512 is about 240.4246648060.

The spelling of 13897512 in words is "thirteen million, eight hundred ninety-seven thousand, five hundred twelve".