75728226 has 64 divisors (see below), whose sum is σ = 182476800. Its totient is φ = 20921040.

The previous prime is 75728221. The next prime is 75728249. The reversal of 75728226 is 62282757.

It is not an unprimeable number, because it can be changed into a prime (75728221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63205 + ... + 64391.

It is an arithmetic number, because the mean of its divisors is an integer number (2851200).

Almost surely, 2^75728226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75728226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91238400).

75728226 is an abundant number, since it is smaller than the sum of its proper divisors (106748574).

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

75728226 is a wasteful number, since it uses less digits than its factorization.

75728226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244 (or 1230 counting only the distinct ones).

The product of its digits is 94080, while the sum is 39.

The square root of 75728226 is about 8702.1966192451. The cubic root of 75728226 is about 423.0768489273.

The spelling of 75728226 in words is "seventy-five million, seven hundred twenty-eight thousand, two hundred twenty-six".