2156480 has 56 divisors (see below), whose sum is σ = 5376672. Its totient is φ = 822272.

The previous prime is 2156461. The next prime is 2156491. The reversal of 2156480 is 846512.

It is a super-3 number, since 3×2156480³ = 30085522530533376000, which contains 333 as substring.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 7214 + ... + 7506.

It is an arithmetic number, because the mean of its divisors is an integer number (96012).

2^2156480 is an apocalyptic number.

2156480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2156480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2688336).

2156480 is an abundant number, since it is smaller than the sum of its proper divisors (3220192).

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

2156480 is a wasteful number, since it uses less digits than its factorization.

2156480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 2156480 is about 1468.4958290714. The cubic root of 2156480 is about 129.1958246118.

The spelling of 2156480 in words is "two million, one hundred fifty-six thousand, four hundred eighty".