28867120 has 40 divisors (see below), whose sum is σ = 68049216. Its totient is φ = 11386368.

The previous prime is 28867117. The next prime is 28867129. The reversal of 28867120 is 2176882.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (28867129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3369 + ... + 8311.

Almost surely, 2^28867120 is an apocalyptic number.

28867120 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 28867120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34024608).

28867120 is an abundant number, since it is smaller than the sum of its proper divisors (39182096).

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

28867120 is a wasteful number, since it uses less digits than its factorization.

28867120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5029 (or 5023 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 28867120 is about 5372.8130434624. The cubic root of 28867120 is about 306.7617117705.

The spelling of 28867120 in words is "twenty-eight million, eight hundred sixty-seven thousand, one hundred twenty".