2628261 has 16 divisors (see below), whose sum is σ = 3918720. Its totient is φ = 1740960.

The previous prime is 2628229. The next prime is 2628277. The reversal of 2628261 is 1628262.

It is not a de Polignac number, because 2628261 - 2⁵ = 2628229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2629261) 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, 8241 + ... + 8553.

It is an arithmetic number, because the mean of its divisors is an integer number (244920).

2^2628261 is an apocalyptic number.

It is an amenable number.

2628261 is a deficient number, since it is larger than the sum of its proper divisors (1290459).

2628261 is a wasteful number, since it uses less digits than its factorization.

2628261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633 (or 627 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 2628261 is about 1621.1912286957. The cubic root of 2628261 is about 138.0033080492.

Subtracting from 2628261 its reverse (1628262), we obtain a palindrome (999999).

The spelling of 2628261 in words is "two million, six hundred twenty-eight thousand, two hundred sixty-one".