28222051 has 16 divisors (see below), whose sum is σ = 33401088. Its totient is φ = 23508000.

The previous prime is 28222037. The next prime is 28222069. The reversal of 28222051 is 15022282.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28222051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28222021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20940 + ... + 22246.

It is an arithmetic number, because the mean of its divisors is an integer number (2087568).

Almost surely, 2^28222051 is an apocalyptic number.

28222051 is a deficient number, since it is larger than the sum of its proper divisors (5179037).

28222051 is a wasteful number, since it uses less digits than its factorization.

28222051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 28222051 is about 5312.4430349887. The cubic root of 28222051 is about 304.4594959979.

The spelling of 28222051 in words is "twenty-eight million, two hundred twenty-two thousand, fifty-one".