28423066 has 16 divisors (see below), whose sum is σ = 49021056. Its totient is φ = 12107376.

The previous prime is 28423039. The next prime is 28423081. The reversal of 28423066 is 66032482.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3741 + ... + 8416.

It is an arithmetic number, because the mean of its divisors is an integer number (3063816).

Almost surely, 2^28423066 is an apocalyptic number.

28423066 is a deficient number, since it is larger than the sum of its proper divisors (20597990).

28423066 is a wasteful number, since it uses less digits than its factorization.

28423066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12333.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 28423066 is about 5331.3287274375. The cubic root of 28423066 is about 305.1806365245.

The spelling of 28423066 in words is "twenty-eight million, four hundred twenty-three thousand, sixty-six".