2292720 has 80 divisors (see below), whose sum is σ = 7312032. Its totient is φ = 593920.

The previous prime is 2292713. The next prime is 2292733. The reversal of 2292720 is 272922.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9724 + ... + 9956.

2^2292720 is an apocalyptic number.

2292720 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 2292720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3656016).

2292720 is an abundant number, since it is smaller than the sum of its proper divisors (5019312).

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

2292720 is a wasteful number, since it uses less digits than its factorization.

2292720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 2292720 is about 1514.1730416303. The cubic root of 2292720 is about 131.8611947694.

The spelling of 2292720 in words is "two million, two hundred ninety-two thousand, seven hundred twenty".