28772366 has 32 divisors (see below), whose sum is σ = 51148800. Its totient is φ = 11883456.

The previous prime is 28772363. The next prime is 28772389. The reversal of 28772366 is 66327782.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28772363) 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 15 ways as a sum of consecutive naturals, for example, 47735 + ... + 48333.

It is an arithmetic number, because the mean of its divisors is an integer number (1598400).

Almost surely, 2^28772366 is an apocalyptic number.

28772366 is a deficient number, since it is larger than the sum of its proper divisors (22376434).

28772366 is a wasteful number, since it uses less digits than its factorization.

28772366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728.

The product of its digits is 169344, while the sum is 41.

The square root of 28772366 is about 5363.9878821638. The cubic root of 28772366 is about 306.4257036453.

The spelling of 28772366 in words is "twenty-eight million, seven hundred seventy-two thousand, three hundred sixty-six".