75240306 has 32 divisors (see below), whose sum is σ = 167502720. Its totient is φ = 25034832.

The previous prime is 75240299. The next prime is 75240331. The reversal of 75240306 is 60304257.

It is a happy number.

It is a super-2 number, since 2×75240306² = 11322207293947272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 75240306.

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, 43596 + ... + 45288.

It is an arithmetic number, because the mean of its divisors is an integer number (5234460).

Almost surely, 2^75240306 is an apocalyptic number.

75240306 is an abundant number, since it is smaller than the sum of its proper divisors (92262414).

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

75240306 is a wasteful number, since it uses less digits than its factorization.

75240306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527 (or 2521 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 75240306 is about 8674.1170155815. The cubic root of 75240306 is about 422.1662567506.

The spelling of 75240306 in words is "seventy-five million, two hundred forty thousand, three hundred six".