2257408 has 20 divisors (see below), whose sum is σ = 4511430. Its totient is φ = 1128448.

The previous prime is 2257403. The next prime is 2257439. The reversal of 2257408 is 8047522.

It can be written as a sum of positive squares in only one way, i.e., 2214144 + 43264 = 1488^2 + 208^2 .

It is not an unprimeable number, because it can be changed into a prime (2257403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1693 + ... + 2716.

2^2257408 is an apocalyptic number.

It is an amenable number.

2257408 is a deficient number, since it is larger than the sum of its proper divisors (2254022).

2257408 is an frugal number, since it uses more digits than its factorization.

2257408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4427 (or 4411 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 2257408 is about 1502.4673041368. The cubic root of 2257408 is about 131.1807229263.

The spelling of 2257408 in words is "two million, two hundred fifty-seven thousand, four hundred eight".