2738257 has 4 divisors (see below), whose sum is σ = 2776896. Its totient is φ = 2699620.

The previous prime is 2738251. The next prime is 2738269. The reversal of 2738257 is 7528372.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2738257 - 2⁷ = 2738129 is a prime.

It is a Duffinian number.

2738257 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2738251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19213 + ... + 19354.

It is an arithmetic number, because the mean of its divisors is an integer number (694224).

2^2738257 is an apocalyptic number.

It is an amenable number.

2738257 is a deficient number, since it is larger than the sum of its proper divisors (38639).

2738257 is an equidigital number, since it uses as much as digits as its factorization.

2738257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38638.

The product of its digits is 23520, while the sum is 34.

The square root of 2738257 is about 1654.7679595641. The cubic root of 2738257 is about 139.9022617138.

The spelling of 2738257 in words is "two million, seven hundred thirty-eight thousand, two hundred fifty-seven".