75318444 has 48 divisors (see below), whose sum is σ = 196399840. Its totient is φ = 24960960.

The previous prime is 75318431. The next prime is 75318461. The reversal of 75318444 is 44481357.

75318444 is a `hidden beast` number, since 7 + 531 + 84 + 44 = 666.

It is a super-2 number, since 2×75318444² = 11345736013162272, which contains 22 as substring.

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 = 75318399 and 75318408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17622 + ... + 21474.

Almost surely, 2^75318444 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 75318444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98199920).

75318444 is an abundant number, since it is smaller than the sum of its proper divisors (121081396).

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

75318444 is a wasteful number, since it uses less digits than its factorization.

75318444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4047 (or 4039 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 75318444 is about 8678.6199363724. The cubic root of 75318444 is about 422.3123478379.

The spelling of 75318444 in words is "seventy-five million, three hundred eighteen thousand, four hundred forty-four".