22721083 has 8 divisors (see below), whose sum is σ = 28327680. Its totient is φ = 17704680.

The previous prime is 22721081. The next prime is 22721099. The reversal of 22721083 is 38012722.

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

It is not a de Polignac number, because 22721083 - 2¹ = 22721081 is a prime.

It is a super-4 number, since 4×22721083⁴ (a number of 31 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22721081) 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, 147463 + ... + 147616.

It is an arithmetic number, because the mean of its divisors is an integer number (3540960).

Almost surely, 2^22721083 is an apocalyptic number.

22721083 is a deficient number, since it is larger than the sum of its proper divisors (5606597).

22721083 is a wasteful number, since it uses less digits than its factorization.

22721083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295097.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 22721083 is about 4766.6637179478. The cubic root of 22721083 is about 283.2324502047.

The spelling of 22721083 in words is "twenty-two million, seven hundred twenty-one thousand, eighty-three".