28288526 has 8 divisors (see below), whose sum is σ = 48494640. Its totient is φ = 12123648.

The previous prime is 28288499. The next prime is 28288529. The reversal of 28288526 is 62588282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28288529) 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, 1010291 + ... + 1010318.

It is an arithmetic number, because the mean of its divisors is an integer number (6061830).

Almost surely, 2^28288526 is an apocalyptic number.

28288526 is a deficient number, since it is larger than the sum of its proper divisors (20206114).

28288526 is a wasteful number, since it uses less digits than its factorization.

28288526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020618.

The product of its digits is 122880, while the sum is 41.

The square root of 28288526 is about 5318.6958927918. The cubic root of 28288526 is about 304.6983526671.

The spelling of 28288526 in words is "twenty-eight million, two hundred eighty-eight thousand, five hundred twenty-six".