2723520 has 56 divisors (see below), whose sum is σ = 8650224. Its totient is φ = 726016.

The previous prime is 2723503. The next prime is 2723521. The reversal of 2723520 is 253272.

It is a super-2 number, since 2×2723520² = 14835122380800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2723521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459 + ... + 2378.

2^2723520 is an apocalyptic number.

2723520 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 2723520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4325112).

2723520 is an abundant number, since it is smaller than the sum of its proper divisors (5926704).

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

2723520 is a wasteful number, since it uses less digits than its factorization.

2723520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857 (or 2847 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 2723520 is about 1650.3090619638. The cubic root of 2723520 is about 139.6508305521.

Adding to 2723520 its reverse (253272), we get a palindrome (2976792).

The spelling of 2723520 in words is "two million, seven hundred twenty-three thousand, five hundred twenty".