2152989 has 24 divisors (see below), whose sum is σ = 3290040. Its totient is φ = 1354752.

The previous prime is 2152973. The next prime is 2153051. The reversal of 2152989 is 9892512.

It can be written as a sum of positive squares in 4 ways, for example, as 27225 + 2125764 = 165^2 + 1458^2 .

It is not a de Polignac number, because 2152989 - 2⁴ = 2152973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152939) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18997 + ... + 19109.

It is an arithmetic number, because the mean of its divisors is an integer number (137085).

2^2152989 is an apocalyptic number.

2152989 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2152989 is a deficient number, since it is larger than the sum of its proper divisors (1137051).

2152989 is a wasteful number, since it uses less digits than its factorization.

2152989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 218 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 2152989 is about 1467.3067164025. The cubic root of 2152989 is about 129.1260710905.

The spelling of 2152989 in words is "two million, one hundred fifty-two thousand, nine hundred eighty-nine".