2158988 has 12 divisors (see below), whose sum is σ = 4068960. Its totient is φ = 996432.

The previous prime is 2158979. The next prime is 2158993. The reversal of 2158988 is 8898512.

2158988 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2158988² = 9322458368288, which contains 22 as substring.

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, 20708 + ... + 20811.

It is an arithmetic number, because the mean of its divisors is an integer number (339080).

2^2158988 is an apocalyptic number.

It is an amenable number.

2158988 is a deficient number, since it is larger than the sum of its proper divisors (1909972).

2158988 is a wasteful number, since it uses less digits than its factorization.

2158988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41536 (or 41534 counting only the distinct ones).

The product of its digits is 46080, while the sum is 41.

The square root of 2158988 is about 1469.3495159423. The cubic root of 2158988 is about 129.2458903973.

The spelling of 2158988 in words is "two million, one hundred fifty-eight thousand, nine hundred eighty-eight".