75491028 has 60 divisors (see below), whose sum is σ = 207752160. Its totient is φ = 23837328.

The previous prime is 75491023. The next prime is 75491051. The reversal of 75491028 is 82019457.

75491028 is a `hidden beast` number, since 7 + 549 + 102 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 75490983 and 75491001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75491021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25 + ... + 12287.

It is an arithmetic number, because the mean of its divisors is an integer number (3462536).

Almost surely, 2^75491028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75491028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103876080).

75491028 is an abundant number, since it is smaller than the sum of its proper divisors (132261132).

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

75491028 is a wasteful number, since it uses less digits than its factorization.

75491028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12298 (or 12287 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 75491028 is about 8688.5573025676. The cubic root of 75491028 is about 422.6346626755.

The spelling of 75491028 in words is "seventy-five million, four hundred ninety-one thousand, twenty-eight".