75133240 has 64 divisors (see below), whose sum is σ = 208071360. Its totient is φ = 23777280.

The previous prime is 75133237. The next prime is 75133259. The reversal of 75133240 is 4233157.

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 15 ways as a sum of consecutive naturals, for example, 6681 + ... + 13960.

It is an arithmetic number, because the mean of its divisors is an integer number (3251115).

Almost surely, 2^75133240 is an apocalyptic number.

75133240 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

75133240 is an abundant number, since it is smaller than the sum of its proper divisors (132938120).

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

75133240 is a wasteful number, since it uses less digits than its factorization.

75133240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20672 (or 20668 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 75133240 is about 8667.9432393158. The cubic root of 75133240 is about 421.9659159522.

Adding to 75133240 its reverse (4233157), we get a palindrome (79366397).

The spelling of 75133240 in words is "seventy-five million, one hundred thirty-three thousand, two hundred forty".