75147740 has 48 divisors (see below), whose sum is σ = 163289952. Its totient is φ = 29028096.

The previous prime is 75147731. The next prime is 75147781. The reversal of 75147740 is 4774157.

It is a self number, because there is not a number n which added to its sum of digits gives 75147740.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127727 + ... + 128313.

It is an arithmetic number, because the mean of its divisors is an integer number (3401874).

Almost surely, 2^75147740 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 75147740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81644976).

75147740 is an abundant number, since it is smaller than the sum of its proper divisors (88142212).

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

75147740 is a wasteful number, since it uses less digits than its factorization.

75147740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806 (or 804 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 35.

The square root of 75147740 is about 8668.7796142248. The cubic root of 75147740 is about 421.9930593409.

The spelling of 75147740 in words is "seventy-five million, one hundred forty-seven thousand, seven hundred forty".