28113740 has 24 divisors (see below), whose sum is σ = 59376240. Its totient is φ = 11181248.

The previous prime is 28113739. The next prime is 28113781. The reversal of 28113740 is 4731182.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347 + ... + 7506.

It is an arithmetic number, because the mean of its divisors is an integer number (2474010).

Almost surely, 2^28113740 is an apocalyptic number.

28113740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28113740 is an abundant number, since it is smaller than the sum of its proper divisors (31262500).

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

28113740 is a wasteful number, since it uses less digits than its factorization.

28113740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8041 (or 8039 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 28113740 is about 5302.2391496423. The cubic root of 28113740 is about 304.0695103055.

The spelling of 28113740 in words is "twenty-eight million, one hundred thirteen thousand, seven hundred forty".