28622923 has 8 divisors (see below), whose sum is σ = 32744448. Its totient is φ = 24509544.

The previous prime is 28622887. The next prime is 28622929. The reversal of 28622923 is 32922682.

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 28622923 - 2¹⁷ = 28491851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28622929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11640 + ... + 13882.

It is an arithmetic number, because the mean of its divisors is an integer number (4093056).

Almost surely, 2^28622923 is an apocalyptic number.

28622923 is a deficient number, since it is larger than the sum of its proper divisors (4121525).

28622923 is a wasteful number, since it uses less digits than its factorization.

28622923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4073.

The product of its digits is 20736, while the sum is 34.

The square root of 28622923 is about 5350.0395325642. The cubic root of 28622923 is about 305.8942598183.

The spelling of 28622923 in words is "twenty-eight million, six hundred twenty-two thousand, nine hundred twenty-three".