75404736 has 112 divisors (see below), whose sum is σ = 241889280. Its totient is φ = 22844160.

The previous prime is 75404731. The next prime is 75404737. The reversal of 75404736 is 63740457.

It is a super-2 number, since 2×75404736² = 11371748422459392, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 75404736.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75404731) by changing a digit.

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, 17025 + ... + 20991.

Almost surely, 2^75404736 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 75404736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120944640).

75404736 is an abundant number, since it is smaller than the sum of its proper divisors (166484544).

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

75404736 is a wasteful number, since it uses less digits than its factorization.

75404736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3999 (or 3983 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The square root of 75404736 is about 8683.5900409911. The cubic root of 75404736 is about 422.4735667321.

The spelling of 75404736 in words is "seventy-five million, four hundred four thousand, seven hundred thirty-six".