75312306 has 12 divisors (see below), whose sum is σ = 163176702. Its totient is φ = 25104096.

The previous prime is 75312301. The next prime is 75312313. The reversal of 75312306 is 60321357.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 70711281 + 4601025 = 8409^2 + 2145^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 75312306.

It is not an unprimeable number, because it can be changed into a prime (75312301) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2091991 + ... + 2092026.

Almost surely, 2^75312306 is an apocalyptic number.

75312306 is an abundant number, since it is smaller than the sum of its proper divisors (87864396).

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

75312306 is a wasteful number, since it uses less digits than its factorization.

75312306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4184025 (or 4184022 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 75312306 is about 8678.2663015144. The cubic root of 75312306 is about 422.3008755545.

The spelling of 75312306 in words is "seventy-five million, three hundred twelve thousand, three hundred six".