28893877066 has 16 divisors (see below), whose sum is σ = 43640569728. Its totient is φ = 14347317600.

The previous prime is 28893877063. The next prime is 28893877073. The reversal of 28893877066 is 66077839882.

It is a super-2 number, since 2×28893877066² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28893876989 and 28893877007.

It is not an unprimeable number, because it can be changed into a prime (28893877063) 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, 121446 + ... + 269326.

It is an arithmetic number, because the mean of its divisors is an integer number (2727535608).

Almost surely, 2^28893877066 is an apocalyptic number.

28893877066 is a deficient number, since it is larger than the sum of its proper divisors (14746692662).

28893877066 is a wasteful number, since it uses less digits than its factorization.

28893877066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148557.

The product of its (nonzero) digits is 48771072, while the sum is 64.

The spelling of 28893877066 in words is "twenty-eight billion, eight hundred ninety-three million, eight hundred seventy-seven thousand, sixty-six".