28777026 has 16 divisors (see below), whose sum is σ = 57607200. Its totient is φ = 9583488.

The previous prime is 28776997. The next prime is 28777027. The reversal of 28777026 is 62077782.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28777027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10065 + ... + 12603.

It is an arithmetic number, because the mean of its divisors is an integer number (3600450).

Almost surely, 2^28777026 is an apocalyptic number.

28777026 is an abundant number, since it is smaller than the sum of its proper divisors (28830174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28777026 is a wasteful number, since it uses less digits than its factorization.

28777026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4433.

The product of its (nonzero) digits is 65856, while the sum is 39.

The square root of 28777026 is about 5364.4222428888. The cubic root of 28777026 is about 306.4422457526.

The spelling of 28777026 in words is "twenty-eight million, seven hundred seventy-seven thousand, twenty-six".