28222337 has 8 divisors (see below), whose sum is σ = 33156480. Its totient is φ = 23682960.

The previous prime is 28222331. The next prime is 28222349. The reversal of 28222337 is 73322282.

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 28222337 - 2⁶ = 28222273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28222331) 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, 98537 + ... + 98822.

It is an arithmetic number, because the mean of its divisors is an integer number (4144560).

Almost surely, 2^28222337 is an apocalyptic number.

It is an amenable number.

28222337 is a deficient number, since it is larger than the sum of its proper divisors (4934143).

28222337 is a wasteful number, since it uses less digits than its factorization.

28222337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197383.

The product of its digits is 8064, while the sum is 29.

The square root of 28222337 is about 5312.4699528562. The cubic root of 28222337 is about 304.4605244505.

The spelling of 28222337 in words is "twenty-eight million, two hundred twenty-two thousand, three hundred thirty-seven".