13642888 has 16 divisors (see below), whose sum is σ = 29234880. Its totient is φ = 5846928.

The previous prime is 13642879. The next prime is 13642901. The reversal of 13642888 is 88824631.

It is a super-2 number, since 2×13642888² = 372256785961088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13642888.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121756 + ... + 121867.

It is an arithmetic number, because the mean of its divisors is an integer number (1827180).

Almost surely, 2^13642888 is an apocalyptic number.

It is an amenable number.

13642888 is an abundant number, since it is smaller than the sum of its proper divisors (15591992).

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

13642888 is a wasteful number, since it uses less digits than its factorization.

13642888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243636 (or 243632 counting only the distinct ones).

The product of its digits is 73728, while the sum is 40.

The square root of 13642888 is about 3693.6280267509. The cubic root of 13642888 is about 238.9472873834.

The spelling of 13642888 in words is "thirteen million, six hundred forty-two thousand, eight hundred eighty-eight".