28670128451 has 16 divisors (see below), whose sum is σ = 31884019200. Its totient is φ = 25666589088.

The previous prime is 28670128441. The next prime is 28670128481. The reversal of 28670128451 is 15482107682.

It is a cyclic number.

It is not a de Polignac number, because 28670128451 - 2⁶ = 28670128387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28670128411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 527645 + ... + 579438.

It is an arithmetic number, because the mean of its divisors is an integer number (1992751200).

Almost surely, 2^28670128451 is an apocalyptic number.

28670128451 is a deficient number, since it is larger than the sum of its proper divisors (3213890749).

28670128451 is a wasteful number, since it uses less digits than its factorization.

28670128451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107178.

The product of its (nonzero) digits is 215040, while the sum is 44.

The spelling of 28670128451 in words is "twenty-eight billion, six hundred seventy million, one hundred twenty-eight thousand, four hundred fifty-one".