2828061257 has 4 divisors (see below), whose sum is σ = 3232070016. Its totient is φ = 2424052500.

The previous prime is 2828061233. The next prime is 2828061259. The reversal of 2828061257 is 7521608282.

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 2828061257 - 2⁶ = 2828061193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2828061259) 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, 202004369 + ... + 202004382.

It is an arithmetic number, because the mean of its divisors is an integer number (808017504).

Almost surely, 2^2828061257 is an apocalyptic number.

It is an amenable number.

2828061257 is a deficient number, since it is larger than the sum of its proper divisors (404008759).

2828061257 is an equidigital number, since it uses as much as digits as its factorization.

2828061257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404008758.

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 2828061257 is about 53179.5191497629. The cubic root of 2828061257 is about 1414.1525817860.

The spelling of 2828061257 in words is "two billion, eight hundred twenty-eight million, sixty-one thousand, two hundred fifty-seven".