28857237770 has 16 divisors (see below), whose sum is σ = 51946887168. Its totient is φ = 11542037520.

The previous prime is 28857237767. The next prime is 28857237821. The reversal of 28857237770 is 7773275882.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44327 + ... + 244293.

It is an arithmetic number, because the mean of its divisors is an integer number (3246680448).

Almost surely, 2^28857237770 is an apocalyptic number.

28857237770 is a deficient number, since it is larger than the sum of its proper divisors (23089649398).

28857237770 is a wasteful number, since it uses less digits than its factorization.

28857237770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214405.

The product of its (nonzero) digits is 9219840, while the sum is 56.

The spelling of 28857237770 in words is "twenty-eight billion, eight hundred fifty-seven million, two hundred thirty-seven thousand, seven hundred seventy".