28880697406 has 32 divisors (see below), whose sum is σ = 47999381760. Its totient is φ = 12922593600.

The previous prime is 28880697389. The next prime is 28880697421. The reversal of 28880697406 is 60479608882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1015330 + ... + 1043386.

It is an arithmetic number, because the mean of its divisors is an integer number (1499980680).

Almost surely, 2^28880697406 is an apocalyptic number.

28880697406 is a deficient number, since it is larger than the sum of its proper divisors (19118684354).

28880697406 is a wasteful number, since it uses less digits than its factorization.

28880697406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28800.

The product of its (nonzero) digits is 9289728, while the sum is 58.

The spelling of 28880697406 in words is "twenty-eight billion, eight hundred eighty million, six hundred ninety-seven thousand, four hundred six".