2520690 has 32 divisors (see below), whose sum is σ = 6137856. Its totient is φ = 662400.

The previous prime is 2520689. The next prime is 2520697. The reversal of 2520690 is 960252.

2520690 is nontrivially palindromic in base 14.

It is a super-2 number, since 2×2520690² = 12707756152200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2520690.

It is not an unprimeable number, because it can be changed into a prime (2520697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1615 + ... + 2765.

It is an arithmetic number, because the mean of its divisors is an integer number (191808).

2^2520690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2520690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3068928).

2520690 is an abundant number, since it is smaller than the sum of its proper divisors (3617166).

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

2520690 is a wasteful number, since it uses less digits than its factorization.

2520690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 2520690 is about 1587.6681013360. The cubic root of 2520690 is about 136.0942613538.

The spelling of 2520690 in words is "two million, five hundred twenty thousand, six hundred ninety".