2537820 has 72 divisors (see below), whose sum is σ = 8045856. Its totient is φ = 646272.

The previous prime is 2537803. The next prime is 2537837. The reversal of 2537820 is 287352.

It is an interprime number because it is at equal distance from previous prime (2537803) and next prime (2537837).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3834 + ... + 4446.

It is an arithmetic number, because the mean of its divisors is an integer number (111748).

2^2537820 is an apocalyptic number.

2537820 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 2537820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4022928).

2537820 is an abundant number, since it is smaller than the sum of its proper divisors (5508036).

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

2537820 is a wasteful number, since it uses less digits than its factorization.

2537820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651 (or 646 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 2537820 is about 1593.0536714122. The cubic root of 2537820 is about 136.4018535307.

The spelling of 2537820 in words is "two million, five hundred thirty-seven thousand, eight hundred twenty".