75147738 has 16 divisors (see below), whose sum is σ = 150408576. Its totient is φ = 25030400.

The previous prime is 75147731. The next prime is 75147781. The reversal of 75147738 is 83774157.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 75147738.

It is not an unprimeable number, because it can be changed into a prime (75147731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5695 + ... + 13517.

It is an arithmetic number, because the mean of its divisors is an integer number (9400536).

Almost surely, 2^75147738 is an apocalyptic number.

75147738 is an abundant number, since it is smaller than the sum of its proper divisors (75260838).

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

75147738 is a wasteful number, since it uses less digits than its factorization.

75147738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9429.

The product of its digits is 164640, while the sum is 42.

The square root of 75147738 is about 8668.7794988683. The cubic root of 75147738 is about 421.9930555973.

The spelling of 75147738 in words is "seventy-five million, one hundred forty-seven thousand, seven hundred thirty-eight".