28522072 has 16 divisors (see below), whose sum is σ = 54723240. Its totient is φ = 13929216.

The previous prime is 28522069. The next prime is 28522099. The reversal of 28522072 is 27022582.

It is a self number, because there is not a number n which added to its sum of digits gives 28522072.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41113 + ... + 41800.

Almost surely, 2^28522072 is an apocalyptic number.

It is an amenable number.

28522072 is a deficient number, since it is larger than the sum of its proper divisors (26201168).

28522072 is a wasteful number, since it uses less digits than its factorization.

28522072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82962 (or 82958 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 28522072 is about 5340.6059581287. The cubic root of 28522072 is about 305.5345708907.

The spelling of 28522072 in words is "twenty-eight million, five hundred twenty-two thousand, seventy-two".