72169336 has 16 divisors (see below), whose sum is σ = 136560600. Its totient is φ = 35753184.

The previous prime is 72169327. The next prime is 72169337. The reversal of 72169336 is 63396127.

It is a junction number, because it is equal to n+sod(n) for n = 72169295 and 72169304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72169337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40510 + ... + 42253.

Almost surely, 2^72169336 is an apocalyptic number.

It is an amenable number.

72169336 is a deficient number, since it is larger than the sum of its proper divisors (64391264).

72169336 is a wasteful number, since it uses less digits than its factorization.

72169336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82878 (or 82874 counting only the distinct ones).

The product of its digits is 40824, while the sum is 37.

The square root of 72169336 is about 8495.2537337033. The cubic root of 72169336 is about 416.3426509963.

The spelling of 72169336 in words is "seventy-two million, one hundred sixty-nine thousand, three hundred thirty-six".