2158980 has 24 divisors (see below), whose sum is σ = 6045312. Its totient is φ = 575712.

The previous prime is 2158979. The next prime is 2158993. The reversal of 2158980 is 898512.

It is a happy number.

It is a super-2 number, since 2×2158980² = 9322389280800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17932 + ... + 18051.

It is an arithmetic number, because the mean of its divisors is an integer number (251888).

2^2158980 is an apocalyptic number.

2158980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2158980 is an abundant number, since it is smaller than the sum of its proper divisors (3886332).

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

2158980 is a wasteful number, since it uses less digits than its factorization.

2158980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35995 (or 35993 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 2158980 is about 1469.3467936468. The cubic root of 2158980 is about 129.2457307595.

The spelling of 2158980 in words is "two million, one hundred fifty-eight thousand, nine hundred eighty".