28937260 has 48 divisors (see below), whose sum is σ = 68447232. Its totient is φ = 10180800.

The previous prime is 28937239. The next prime is 28937261. The reversal of 28937260 is 6273982.

It is not an unprimeable number, because it can be changed into a prime (28937261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4699 + ... + 8941.

It is an arithmetic number, because the mean of its divisors is an integer number (1425984).

Almost surely, 2^28937260 is an apocalyptic number.

28937260 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 28937260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34223616).

28937260 is an abundant number, since it is smaller than the sum of its proper divisors (39509972).

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

28937260 is a wasteful number, since it uses less digits than its factorization.

28937260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4294 (or 4292 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 28937260 is about 5379.3363902995. The cubic root of 28937260 is about 307.0099626471.

Subtracting from 28937260 its reverse (6273982), we obtain a triangular number (22663278 = T₆₇₃₂).

It can be divided in two parts, 2893 and 7260, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 28937260 in words is "twenty-eight million, nine hundred thirty-seven thousand, two hundred sixty".