82144738 has 8 divisors (see below), whose sum is σ = 132695388. Its totient is φ = 37912944.

The previous prime is 82144723. The next prime is 82144757. The reversal of 82144738 is 83744128.

It can be written as a sum of positive squares in 2 ways, for example, as 78092569 + 4052169 = 8837^2 + 2013^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 82144697 and 82144706.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1579681 + ... + 1579732.

Almost surely, 2^82144738 is an apocalyptic number.

82144738 is a deficient number, since it is larger than the sum of its proper divisors (50550650).

82144738 is a wasteful number, since it uses less digits than its factorization.

82144738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3159428.

The product of its digits is 43008, while the sum is 37.

The square root of 82144738 is about 9063.3734337718. The cubic root of 82144738 is about 434.7036127852.

The spelling of 82144738 in words is "eighty-two million, one hundred forty-four thousand, seven hundred thirty-eight".