72105370 has 8 divisors (see below), whose sum is σ = 129789684. Its totient is φ = 28842144.

The previous prime is 72105343. The next prime is 72105401. The reversal of 72105370 is 7350127.

It can be written as a sum of positive squares in 2 ways, for example, as 60388441 + 11716929 = 7771^2 + 3423^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3605259 + ... + 3605278.

Almost surely, 2^72105370 is an apocalyptic number.

72105370 is a deficient number, since it is larger than the sum of its proper divisors (57684314).

72105370 is a wasteful number, since it uses less digits than its factorization.

72105370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7210544.

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 72105370 is about 8491.4880910239. The cubic root of 72105370 is about 416.2196086833.

Adding to 72105370 its reverse (7350127), we get a palindrome (79455497).

The spelling of 72105370 in words is "seventy-two million, one hundred five thousand, three hundred seventy".