2503720 has 32 divisors (see below), whose sum is σ = 5744520. Its totient is φ = 981760.

The previous prime is 2503717. The next prime is 2503729. The reversal of 2503720 is 273052.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2477476 + 26244 = 1574^2 + 162^2 .

It is a super-2 number, since 2×2503720² = 12537227676800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2503729) 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, 1530 + ... + 2710.

2^2503720 is an apocalyptic number.

2503720 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 2503720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2872260).

2503720 is an abundant number, since it is smaller than the sum of its proper divisors (3240800).

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

2503720 is a wasteful number, since it uses less digits than its factorization.

2503720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245 (or 1241 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 2503720 is about 1582.3147600904. The cubic root of 2503720 is about 135.7881650247.

Adding to 2503720 its reverse (273052), we get a palindrome (2776772).

It can be divided in two parts, 2503 and 720, that added together give a palindrome (3223).

The spelling of 2503720 in words is "two million, five hundred three thousand, seven hundred twenty".