2172480 has 112 divisors (see below), whose sum is σ = 7217664. Its totient is φ = 552960.

The previous prime is 2172473. The next prime is 2172491. The reversal of 2172480 is 842712.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2172480.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29724 + ... + 29796.

2^2172480 is an apocalyptic number.

2172480 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 2172480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3608832).

2172480 is an abundant number, since it is smaller than the sum of its proper divisors (5045184).

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

2172480 is a wasteful number, since it uses less digits than its factorization.

2172480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 2172480 is about 1473.9335127474. The cubic root of 2172480 is about 129.5145603600.

The spelling of 2172480 in words is "two million, one hundred seventy-two thousand, four hundred eighty".