28852815777 has 8 divisors (see below), whose sum is σ = 39012258240. Its totient is φ = 18964291920.

The previous prime is 28852815767. The next prime is 28852815787. The reversal of 28852815777 is 77751825882.

It is an interprime number because it is at equal distance from previous prime (28852815767) and next prime (28852815787).

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

It is not a de Polignac number, because 28852815777 - 2²⁰ = 28851767201 is a prime.

It is a super-2 number, since 2×28852815777² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28852815777.

It is not an unprimeable number, because it can be changed into a prime (28852815737) 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, 67729402 + ... + 67729827.

It is an arithmetic number, because the mean of its divisors is an integer number (4876532280).

Almost surely, 2^28852815777 is an apocalyptic number.

It is an amenable number.

28852815777 is a deficient number, since it is larger than the sum of its proper divisors (10159442463).

28852815777 is a wasteful number, since it uses less digits than its factorization.

28852815777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135459303.

The product of its digits is 17561600, while the sum is 60.

The spelling of 28852815777 in words is "twenty-eight billion, eight hundred fifty-two million, eight hundred fifteen thousand, seven hundred seventy-seven".