28067480 has 64 divisors (see below), whose sum is σ = 73440000. Its totient is φ = 9454464.

The previous prime is 28067471. The next prime is 28067483. The reversal of 28067480 is 8476082.

It is a super-3 number, since 3×28067480³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 28067480.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28067483) by changing a digit.

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, 15671 + ... + 17369.

It is an arithmetic number, because the mean of its divisors is an integer number (1147500).

Almost surely, 2^28067480 is an apocalyptic number.

28067480 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 28067480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36720000).

28067480 is an abundant number, since it is smaller than the sum of its proper divisors (45372520).

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

28067480 is a wasteful number, since it uses less digits than its factorization.

28067480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776 (or 1772 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 28067480 is about 5297.8750457141. The cubic root of 28067480 is about 303.9026407990.

The spelling of 28067480 in words is "twenty-eight million, sixty-seven thousand, four hundred eighty".