28031360 has 64 divisors (see below), whose sum is σ = 76597920. Its totient is φ = 9609216.

The previous prime is 28031321. The next prime is 28031369. The reversal of 28031360 is 6313082.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28031369) 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, 1352 + ... + 7608.

Almost surely, 2^28031360 is an apocalyptic number.

28031360 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 28031360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38298960).

28031360 is an abundant number, since it is smaller than the sum of its proper divisors (48566560).

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

28031360 is an equidigital number, since it uses as much as digits as its factorization.

28031360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6283 (or 6271 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 28031360 is about 5294.4650343543. The cubic root of 28031360 is about 303.7722208789.

The spelling of 28031360 in words is "twenty-eight million, thirty-one thousand, three hundred sixty".