75971730 has 32 divisors (see below), whose sum is σ = 187262784. Its totient is φ = 19711296.

The previous prime is 75971723. The next prime is 75971743. The reversal of 75971730 is 3717957.

It is a happy 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, 33112 + ... + 35331.

It is an arithmetic number, because the mean of its divisors is an integer number (5851962).

Almost surely, 2^75971730 is an apocalyptic number.

75971730 is an abundant number, since it is smaller than the sum of its proper divisors (111291054).

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

75971730 is a wasteful number, since it uses less digits than its factorization.

75971730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68490.

The product of its (nonzero) digits is 46305, while the sum is 39.

The square root of 75971730 is about 8716.1763405750. The cubic root of 75971730 is about 423.5298314153.

The spelling of 75971730 in words is "seventy-five million, nine hundred seventy-one thousand, seven hundred thirty".