28571368 has 16 divisors (see below), whose sum is σ = 61224480. Its totient is φ = 12244848.

The previous prime is 28571353. The next prime is 28571369. The reversal of 28571368 is 86317582.

It is a self number, because there is not a number n which added to its sum of digits gives 28571368.

It is not an unprimeable number, because it can be changed into a prime (28571369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255046 + ... + 255157.

It is an arithmetic number, because the mean of its divisors is an integer number (3826530).

Almost surely, 2^28571368 is an apocalyptic number.

28571368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28571368 is an abundant number, since it is smaller than the sum of its proper divisors (32653112).

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

28571368 is a wasteful number, since it uses less digits than its factorization.

28571368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510216 (or 510212 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 28571368 is about 5345.2191723072. The cubic root of 28571368 is about 305.7104926972.

It can be divided in two parts, 2857 and 1368, that added together give a square (4225 = 65²).

The spelling of 28571368 in words is "twenty-eight million, five hundred seventy-one thousand, three hundred sixty-eight".