28221408790007 has 16 divisors (see below), whose sum is σ = 28633374443520. Its totient is φ = 27810139511232.

The previous prime is 28221408789961. The next prime is 28221408790009. The reversal of 28221408790007 is 70009780412282.

It is a cyclic number.

It is not a de Polignac number, because 28221408790007 - 2³⁴ = 28204228920823 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 (28221408790009) 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, 407559494 + ... + 407628732.

It is an arithmetic number, because the mean of its divisors is an integer number (1789585902720).

Almost surely, 2^{28221408790007} is an apocalyptic number.

28221408790007 is a deficient number, since it is larger than the sum of its proper divisors (411965653513).

28221408790007 is a wasteful number, since it uses less digits than its factorization.

28221408790007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74182.

The product of its (nonzero) digits is 903168, while the sum is 50.

The spelling of 28221408790007 in words is "twenty-eight trillion, two hundred twenty-one billion, four hundred eight million, seven hundred ninety thousand, seven".