2128956 has 48 divisors (see below), whose sum is σ = 5268480. Its totient is φ = 668160.

The previous prime is 2128933. The next prime is 2128963. The reversal of 2128956 is 6598212.

Its product of digits (8640) is a multiple of the sum of its prime divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21900 + ... + 21996.

It is an arithmetic number, because the mean of its divisors is an integer number (109760).

2^2128956 is an apocalyptic number.

It is an amenable number.

2128956 is an abundant number, since it is smaller than the sum of its proper divisors (3139524).

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

2128956 is a wasteful number, since it uses less digits than its factorization.

2128956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 192 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

The square root of 2128956 is about 1459.0942395884. The cubic root of 2128956 is about 128.6438103900.

The spelling of 2128956 in words is "two million, one hundred twenty-eight thousand, nine hundred fifty-six".