28372577866 has 32 divisors (see below), whose sum is σ = 45968549760. Its totient is φ = 13093612224.

The previous prime is 28372577851. The next prime is 28372577867. The reversal of 28372577866 is 66877527382.

It is a super-2 number, since 2×28372577866² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28372577867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2573121 + ... + 2584123.

It is an arithmetic number, because the mean of its divisors is an integer number (1436517180).

Almost surely, 2^28372577866 is an apocalyptic number.

28372577866 is a deficient number, since it is larger than the sum of its proper divisors (17595971894).

28372577866 is a wasteful number, since it uses less digits than its factorization.

28372577866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12990.

The product of its digits is 47416320, while the sum is 61.

The spelling of 28372577866 in words is "twenty-eight billion, three hundred seventy-two million, five hundred seventy-seven thousand, eight hundred sixty-six".