28113750 has 240 divisors, whose sum is σ = 96156720. Its totient is φ = 6048000.

The previous prime is 28113739. The next prime is 28113781. The reversal of 28113750 is 5731182.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1653742 + ... + 1653758.

It is an arithmetic number, because the mean of its divisors is an integer number (400653).

Almost surely, 2^28113750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28113750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48078360).

28113750 is an abundant number, since it is smaller than the sum of its proper divisors (68042970).

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

28113750 is a wasteful number, since it uses less digits than its factorization.

28113750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62 (or 34 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 28113750 is about 5302.2400926401. The cubic root of 28113750 is about 304.0695463578.

It can be divided in two parts, 2811 and 3750, that added together give a 8-th power (6561 = 3⁸).

The spelling of 28113750 in words is "twenty-eight million, one hundred thirteen thousand, seven hundred fifty".