2561208 has 32 divisors (see below), whose sum is σ = 6896400. Its totient is φ = 787968.

The previous prime is 2561201. The next prime is 2561227. The reversal of 2561208 is 8021652.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561201) 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, 3793 + ... + 4416.

2^2561208 is an apocalyptic number.

It is an amenable number.

2561208 is an abundant number, since it is smaller than the sum of its proper divisors (4335192).

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

2561208 is a wasteful number, since it uses less digits than its factorization.

2561208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8231 (or 8227 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 2561208 is about 1600.3774554773. The cubic root of 2561208 is about 136.8195895479.

The spelling of 2561208 in words is "two million, five hundred sixty-one thousand, two hundred eight".