2153998 has 32 divisors (see below), whose sum is σ = 4105728. Its totient is φ = 823200.

The previous prime is 2153993. The next prime is 2154007. The reversal of 2153998 is 8993512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10836 + ... + 11032.

It is an arithmetic number, because the mean of its divisors is an integer number (128304).

2^2153998 is an apocalyptic number.

2153998 is a deficient number, since it is larger than the sum of its proper divisors (1951730).

2153998 is a wasteful number, since it uses less digits than its factorization.

2153998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288.

The product of its digits is 19440, while the sum is 37.

The square root of 2153998 is about 1467.6505033556. The cubic root of 2153998 is about 129.1462396186.

The spelling of 2153998 in words is "two million, one hundred fifty-three thousand, nine hundred ninety-eight".