28522386 has 12 divisors (see below), whose sum is σ = 61798542. Its totient is φ = 9507456.

The previous prime is 28522381. The next prime is 28522409. The reversal of 28522386 is 68322582.

It can be written as a sum of positive squares in only one way, i.e., 23765625 + 4756761 = 4875^2 + 2181^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28522386.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28522381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 792271 + ... + 792306.

Almost surely, 2^28522386 is an apocalyptic number.

28522386 is an abundant number, since it is smaller than the sum of its proper divisors (33276156).

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

28522386 is a wasteful number, since it uses less digits than its factorization.

28522386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584585 (or 1584582 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 28522386 is about 5340.6353554610. The cubic root of 28522386 is about 305.5356920984.

The spelling of 28522386 in words is "twenty-eight million, five hundred twenty-two thousand, three hundred eighty-six".