2788457 has 8 divisors (see below), whose sum is σ = 3197376. Its totient is φ = 2382192.

The previous prime is 2788453. The next prime is 2788469. The reversal of 2788457 is 7548872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2788457 - 2² = 2788453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2788453) 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, 2843 + ... + 3695.

It is an arithmetic number, because the mean of its divisors is an integer number (399672).

2^2788457 is an apocalyptic number.

It is an amenable number.

2788457 is a deficient number, since it is larger than the sum of its proper divisors (408919).

2788457 is an equidigital number, since it uses as much as digits as its factorization.

2788457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327.

The product of its digits is 125440, while the sum is 41.

The square root of 2788457 is about 1669.8673600020. The cubic root of 2788457 is about 140.7520246168.

The spelling of 2788457 in words is "two million, seven hundred eighty-eight thousand, four hundred fifty-seven".