2730457 has 4 divisors (see below), whose sum is σ = 2794000. Its totient is φ = 2666916.

The previous prime is 2730443. The next prime is 2730487. The reversal of 2730457 is 7540372.

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 2730457 - 2¹¹ = 2728409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2730487) 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, 31707 + ... + 31792.

It is an arithmetic number, because the mean of its divisors is an integer number (698500).

2^2730457 is an apocalyptic number.

It is an amenable number.

2730457 is a deficient number, since it is larger than the sum of its proper divisors (63543).

2730457 is an equidigital number, since it uses as much as digits as its factorization.

2730457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63542.

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 2730457 is about 1652.4094528899. The cubic root of 2730457 is about 139.7692969087.

The spelling of 2730457 in words is "two million, seven hundred thirty thousand, four hundred fifty-seven".