28278330007 has 8 divisors (see below), whose sum is σ = 29637818496. Its totient is φ = 26929674552.

The previous prime is 28278329977. The next prime is 28278330013. The reversal of 28278330007 is 70003387282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28278330007 - 2²⁷ = 28144112279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28278330037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2702913 + ... + 2713354.

It is an arithmetic number, because the mean of its divisors is an integer number (3704727312).

Almost surely, 2^28278330007 is an apocalyptic number.

28278330007 is a deficient number, since it is larger than the sum of its proper divisors (1359488489).

28278330007 is a wasteful number, since it uses less digits than its factorization.

28278330007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5416517.

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 28278330007 in words is "twenty-eight billion, two hundred seventy-eight million, three hundred thirty thousand, seven".