28997360 has 80 divisors (see below), whose sum is σ = 78584256. Its totient is φ = 9744384.

The previous prime is 28997347. The next prime is 28997377. The reversal of 28997360 is 6379982.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29192 + ... + 30168.

Almost surely, 2^28997360 is an apocalyptic number.

28997360 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 28997360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39292128).

28997360 is an abundant number, since it is smaller than the sum of its proper divisors (49586896).

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

28997360 is a wasteful number, since it uses less digits than its factorization.

28997360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050 (or 1044 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 28997360 is about 5384.9196837093. The cubic root of 28997360 is about 307.2223593932. Note that the first 3 decimals are identical.

The spelling of 28997360 in words is "twenty-eight million, nine hundred ninety-seven thousand, three hundred sixty".