22428977 has 8 divisors (see below), whose sum is σ = 23336040. Its totient is φ = 21530880.

The previous prime is 22428961. The next prime is 22428983. The reversal of 22428977 is 77982422.

It can be written as a sum of positive squares in 4 ways, for example, as 65536 + 22363441 = 256^2 + 4729^2 .

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 22428977 - 2⁴ = 22428961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22428937) 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 7 ways as a sum of consecutive naturals, for example, 3113 + ... + 7385.

It is an arithmetic number, because the mean of its divisors is an integer number (2917005).

Almost surely, 2^22428977 is an apocalyptic number.

It is an amenable number.

22428977 is a deficient number, since it is larger than the sum of its proper divisors (907063).

22428977 is a wasteful number, since it uses less digits than its factorization.

22428977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4483.

The product of its digits is 112896, while the sum is 41.

The square root of 22428977 is about 4735.9240914525. The cubic root of 22428977 is about 282.0134502245.

The spelling of 22428977 in words is "twenty-two million, four hundred twenty-eight thousand, nine hundred seventy-seven".