28688692406 has 16 divisors (see below), whose sum is σ = 46953353808. Its totient is φ = 13038031200.

The previous prime is 28688692349. The next prime is 28688692411. The reversal of 28688692406 is 60429688682.

It is a congruent number.

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, 17696 + ... + 240188.

It is an arithmetic number, because the mean of its divisors is an integer number (2934584613).

Almost surely, 2^28688692406 is an apocalyptic number.

28688692406 is a deficient number, since it is larger than the sum of its proper divisors (18264661402).

28688692406 is a wasteful number, since it uses less digits than its factorization.

28688692406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228367.

The product of its (nonzero) digits is 15925248, while the sum is 59.

The spelling of 28688692406 in words is "twenty-eight billion, six hundred eighty-eight million, six hundred ninety-two thousand, four hundred six".