28370250 has 96 divisors (see below), whose sum is σ = 79724736. Its totient is φ = 7549200.

The previous prime is 28370227. The next prime is 28370261. The reversal of 28370250 is 5207382.

It is a super-4 number, since 4×28370250⁴ (a number of 31 digits) contains 4444 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60517 + ... + 60983.

It is an arithmetic number, because the mean of its divisors is an integer number (830466).

Almost surely, 2^28370250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28370250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39862368).

28370250 is an abundant number, since it is smaller than the sum of its proper divisors (51354486).

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

28370250 is an equidigital number, since it uses as much as digits as its factorization.

28370250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499 (or 477 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 28370250 is about 5326.3730624131. The cubic root of 28370250 is about 304.9914895054.

The spelling of 28370250 in words is "twenty-eight million, three hundred seventy thousand, two hundred fifty".