2826640457 has 4 divisors (see below), whose sum is σ = 2837639316. Its totient is φ = 2815641600.

The previous prime is 2826640417. The next prime is 2826640459. The reversal of 2826640457 is 7540466282.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2257770256 + 568870201 = 47516^2 + 23851^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2826640457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2826640459) 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, 5499044 + ... + 5499557.

It is an arithmetic number, because the mean of its divisors is an integer number (709409829).

Almost surely, 2^2826640457 is an apocalyptic number.

It is an amenable number.

2826640457 is a deficient number, since it is larger than the sum of its proper divisors (10998859).

2826640457 is a wasteful number, since it uses less digits than its factorization.

2826640457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10998858.

The product of its (nonzero) digits is 645120, while the sum is 44.

The square root of 2826640457 is about 53166.1589453291. The cubic root of 2826640457 is about 1413.9157216930.

The spelling of 2826640457 in words is "two billion, eight hundred twenty-six million, six hundred forty thousand, four hundred fifty-seven".