28766782 has 24 divisors (see below), whose sum is σ = 49077000. Its totient is φ = 12621840.

The previous prime is 28766713. The next prime is 28766783.

28766782 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28766783) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4969 + ... + 9067.

It is an arithmetic number, because the mean of its divisors is an integer number (2044875).

Almost surely, 2^28766782 is an apocalyptic number.

28766782 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28766782 is a deficient number, since it is larger than the sum of its proper divisors (20310218).

28766782 is a wasteful number, since it uses less digits than its factorization.

28766782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4152 (or 4141 counting only the distinct ones).

The product of its digits is 451584, while the sum is 46.

The square root of 28766782 is about 5363.4673486468. The cubic root of 28766782 is about 306.4058791624.

The spelling of 28766782 in words is "twenty-eight million, seven hundred sixty-six thousand, seven hundred eighty-two".