28028025415 has 16 divisors (see below), whose sum is σ = 37469829600. Its totient is φ = 19983906432.

The previous prime is 28028025401. The next prime is 28028025419. The reversal of 28028025415 is 51452082082.

It is a cyclic number.

It is not a de Polignac number, because 28028025415 - 2⁷ = 28028025287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28028025419) 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, 7432605 + ... + 7436374.

It is an arithmetic number, because the mean of its divisors is an integer number (2341864350).

Almost surely, 2^28028025415 is an apocalyptic number.

28028025415 is a deficient number, since it is larger than the sum of its proper divisors (9441804185).

28028025415 is a wasteful number, since it uses less digits than its factorization.

28028025415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14869026.

The product of its (nonzero) digits is 51200, while the sum is 37.

The spelling of 28028025415 in words is "twenty-eight billion, twenty-eight million, twenty-five thousand, four hundred fifteen".