28677390321 has 32 divisors (see below), whose sum is σ = 40905768960. Its totient is φ = 17807682816.

The previous prime is 28677390307. The next prime is 28677390323. The reversal of 28677390321 is 12309377682.

It is not a de Polignac number, because 28677390321 - 2⁹ = 28677389809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28677390323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2708580 + ... + 2719146.

It is an arithmetic number, because the mean of its divisors is an integer number (1278305280).

Almost surely, 2^28677390321 is an apocalyptic number.

It is an amenable number.

28677390321 is a deficient number, since it is larger than the sum of its proper divisors (12228378639).

28677390321 is a wasteful number, since it uses less digits than its factorization.

28677390321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11133.

The product of its (nonzero) digits is 762048, while the sum is 48.

The spelling of 28677390321 in words is "twenty-eight billion, six hundred seventy-seven million, three hundred ninety thousand, three hundred twenty-one".