28273760 has 24 divisors (see below), whose sum is σ = 66797136. Its totient is φ = 11309440.

The previous prime is 28273727. The next prime is 28273769. The reversal of 28273760 is 6737282.

It is a self number, because there is not a number n which added to its sum of digits gives 28273760.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28273769) 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 3 ways as a sum of consecutive naturals, for example, 88196 + ... + 88515.

It is an arithmetic number, because the mean of its divisors is an integer number (2783214).

Almost surely, 2^28273760 is an apocalyptic number.

28273760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28273760 is an abundant number, since it is smaller than the sum of its proper divisors (38523376).

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

28273760 is a wasteful number, since it uses less digits than its factorization.

28273760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176726 (or 176718 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 28273760 is about 5317.3075893727. The cubic root of 28273760 is about 304.6453281190.

The spelling of 28273760 in words is "twenty-eight million, two hundred seventy-three thousand, seven hundred sixty".