2138856 has 16 divisors (see below), whose sum is σ = 5347200. Its totient is φ = 712944.

The previous prime is 2138833. The next prime is 2138861. The reversal of 2138856 is 6588312.

It is a happy number.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

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, 44536 + ... + 44583.

It is an arithmetic number, because the mean of its divisors is an integer number (334200).

2^2138856 is an apocalyptic number.

It is an amenable number.

2138856 is an abundant number, since it is smaller than the sum of its proper divisors (3208344).

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

2138856 is a wasteful number, since it uses less digits than its factorization.

2138856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89128 (or 89124 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 2138856 is about 1462.4828204119. The cubic root of 2138856 is about 128.8429071455.

The spelling of 2138856 in words is "two million, one hundred thirty-eight thousand, eight hundred fifty-six".