28857690746 has 8 divisors (see below), whose sum is σ = 43352826804. Its totient is φ = 14406748480.

The previous prime is 28857690739. The next prime is 28857690749. The reversal of 28857690746 is 64709675882.

It can be written as a sum of positive squares in 2 ways, for example, as 27294674521 + 1563016225 = 165211^2 + 39535^2 .

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

It is not an unprimeable number, because it can be changed into a prime (28857690749) 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, 11046815 + ... + 11049426.

Almost surely, 2^28857690746 is an apocalyptic number.

28857690746 is a deficient number, since it is larger than the sum of its proper divisors (14495136058).

28857690746 is a wasteful number, since it uses less digits than its factorization.

28857690746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22096896.

The product of its (nonzero) digits is 40642560, while the sum is 62.

The spelling of 28857690746 in words is "twenty-eight billion, eight hundred fifty-seven million, six hundred ninety thousand, seven hundred forty-six".