22028777 has 8 divisors (see below), whose sum is σ = 22880640. Its totient is φ = 21183120.

The previous prime is 22028717. The next prime is 22028789. The reversal of 22028777 is 77782022.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22028777 is a prime.

It is a super-2 number, since 2×22028777² = 970534032231458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22028707) 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, 6458 + ... + 9260.

It is an arithmetic number, because the mean of its divisors is an integer number (2860080).

Almost surely, 2^22028777 is an apocalyptic number.

It is an amenable number.

22028777 is a deficient number, since it is larger than the sum of its proper divisors (851863).

22028777 is a wasteful number, since it uses less digits than its factorization.

22028777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3103.

The product of its (nonzero) digits is 21952, while the sum is 35.

The square root of 22028777 is about 4693.4823958336. The cubic root of 22028777 is about 280.3260529952.

The spelling of 22028777 in words is "twenty-two million, twenty-eight thousand, seven hundred seventy-seven".