28505262 has 8 divisors (see below), whose sum is σ = 57010536. Its totient is φ = 9501752.

The previous prime is 28505261. The next prime is 28505329. The reversal of 28505262 is 26250582.

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

28505262 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28505261) 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, 2375433 + ... + 2375444.

It is an arithmetic number, because the mean of its divisors is an integer number (7126317).

Almost surely, 2^28505262 is an apocalyptic number.

28505262 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28505262 is a wasteful number, since it uses less digits than its factorization.

28505262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4750882.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 28505262 is about 5339.0319347237. The cubic root of 28505262 is about 305.4745349827.

The spelling of 28505262 in words is "twenty-eight million, five hundred five thousand, two hundred sixty-two".