2257650 has 72 divisors (see below), whose sum is σ = 6310980. Its totient is φ = 577920.

The previous prime is 2257649. The next prime is 2257667. The reversal of 2257650 is 567522.

2257650 = T₃₈₀ + T₃₈₁ + ... + T₄₀₈.

2257650 is a `hidden beast` number, since 2 + 2 + 5 + 7 + 650 = 666.

2257650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 1375929 + 881721 = 1173^2 + 939^2 .

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12964 + ... + 13136.

2^2257650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2257650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3155490).

2257650 is an abundant number, since it is smaller than the sum of its proper divisors (4053330).

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

2257650 is a wasteful number, since it uses less digits than its factorization.

2257650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 2257650 is about 1502.5478361769. The cubic root of 2257650 is about 131.1854103968.

It can be divided in two parts, 225 and 7650, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 2257650 in words is "two million, two hundred fifty-seven thousand, six hundred fifty".