28078602654 has 16 divisors (see below), whose sum is σ = 56160504720. Its totient is φ = 9358984320.

The previous prime is 28078602649. The next prime is 28078602683. The reversal of 28078602654 is 45620687082.

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, 18987 + ... + 237734.

It is an arithmetic number, because the mean of its divisors is an integer number (3510031545).

Almost surely, 2^28078602654 is an apocalyptic number.

28078602654 is an abundant number, since it is smaller than the sum of its proper divisors (28081902066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28078602654 is a wasteful number, since it uses less digits than its factorization.

28078602654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274955.

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 28078602654 in words is "twenty-eight billion, seventy-eight million, six hundred two thousand, six hundred fifty-four".