28267040 has 96 divisors (see below), whose sum is σ = 71124480. Its totient is φ = 10598400.

The previous prime is 28267027. The next prime is 28267067. The reversal of 28267040 is 4076282.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28266994 and 28267012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203291 + ... + 203429.

It is an arithmetic number, because the mean of its divisors is an integer number (740880).

Almost surely, 2^28267040 is an apocalyptic number.

28267040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28267040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35562240).

28267040 is an abundant number, since it is smaller than the sum of its proper divisors (42857440).

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

28267040 is a wasteful number, since it uses less digits than its factorization.

28267040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 28267040 is about 5316.6756530750. The cubic root of 28267040 is about 304.6211905580.

The spelling of 28267040 in words is "twenty-eight million, two hundred sixty-seven thousand, forty".