75450240 has 96 divisors (see below), whose sum is σ = 260559000. Its totient is φ = 20118528.

The previous prime is 75450191. The next prime is 75450269. The reversal of 75450240 is 4205457.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 790 + ... + 12309.

Almost surely, 2^75450240 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 75450240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130279500).

75450240 is an abundant number, since it is smaller than the sum of its proper divisors (185108760).

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

75450240 is a wasteful number, since it uses less digits than its factorization.

75450240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13124 (or 13109 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 75450240 is about 8686.2097603040. The cubic root of 75450240 is about 422.5585320912.

Adding to 75450240 its reverse (4205457), we get a palindrome (79655697).

The spelling of 75450240 in words is "seventy-five million, four hundred fifty thousand, two hundred forty".