28263078 has 24 divisors (see below), whose sum is σ = 64839528. Its totient is φ = 8866752.

The previous prime is 28263071. The next prime is 28263091. The reversal of 28263078 is 87036282.

It is a happy number.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28263071) 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 11 ways as a sum of consecutive naturals, for example, 45876 + ... + 46487.

It is an arithmetic number, because the mean of its divisors is an integer number (2701647).

Almost surely, 2^28263078 is an apocalyptic number.

28263078 is an abundant number, since it is smaller than the sum of its proper divisors (36576450).

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

28263078 is a wasteful number, since it uses less digits than its factorization.

28263078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92388 (or 92385 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 28263078 is about 5316.3030387667. The cubic root of 28263078 is about 304.6069576617.

The spelling of 28263078 in words is "twenty-eight million, two hundred sixty-three thousand, seventy-eight".