28026252 has 18 divisors (see below), whose sum is σ = 70844228. Its totient is φ = 9342072.

The previous prime is 28026223. The next prime is 28026253. The reversal of 28026252 is 25262082.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (28026253) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 389218 + ... + 389289.

Almost surely, 2^28026252 is an apocalyptic number.

It is an amenable number.

28026252 is an abundant number, since it is smaller than the sum of its proper divisors (42817976).

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

28026252 is a wasteful number, since it uses less digits than its factorization.

28026252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778517 (or 778512 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 28026252 is about 5293.9826218075. The cubic root of 28026252 is about 303.7537681796.

The spelling of 28026252 in words is "twenty-eight million, twenty-six thousand, two hundred fifty-two".