2158480 has 20 divisors (see below), whose sum is σ = 5018652. Its totient is φ = 863360.

The previous prime is 2158477. The next prime is 2158483. The reversal of 2158480 is 848512.

It is an interprime number because it is at equal distance from previous prime (2158477) and next prime (2158483).

It can be written as a sum of positive squares in 2 ways, for example, as 478864 + 1679616 = 692^2 + 1296^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2158483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13411 + ... + 13570.

2^2158480 is an apocalyptic number.

2158480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2158480 is an abundant number, since it is smaller than the sum of its proper divisors (2860172).

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

2158480 is a wasteful number, since it uses less digits than its factorization.

2158480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26994 (or 26988 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 2158480 is about 1469.1766401628. The cubic root of 2158480 is about 129.2357526132.

The spelling of 2158480 in words is "two million, one hundred fifty-eight thousand, four hundred eighty".