2573720 has 48 divisors (see below), whose sum is σ = 6078240. Its totient is φ = 980352.

The previous prime is 2573717. The next prime is 2573729. The reversal of 2573720 is 273752.

It is a self number, because there is not a number n which added to its sum of digits gives 2573720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2573729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54737 + ... + 54783.

It is an arithmetic number, because the mean of its divisors is an integer number (126630).

2^2573720 is an apocalyptic number.

2573720 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 2573720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3039120).

2573720 is an abundant number, since it is smaller than the sum of its proper divisors (3504520).

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

2573720 is a wasteful number, since it uses less digits than its factorization.

2573720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 26.

The square root of 2573720 is about 1604.2817707622. The cubic root of 2573720 is about 137.0420245098.

Subtracting from 2573720 its reverse (273752), we obtain a cube (2299968 = 132³).

The spelling of 2573720 in words is "two million, five hundred seventy-three thousand, seven hundred twenty".