72169036 has 24 divisors (see below), whose sum is σ = 128978640. Its totient is φ = 35323392.

The previous prime is 72169033. The next prime is 72169037. The reversal of 72169036 is 63096127.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 72168992 and 72169010.

It is not an unprimeable number, because it can be changed into a prime (72169033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73380 + ... + 74356.

It is an arithmetic number, because the mean of its divisors is an integer number (5374110).

Almost surely, 2^72169036 is an apocalyptic number.

It is an amenable number.

72169036 is a deficient number, since it is larger than the sum of its proper divisors (56809604).

72169036 is a wasteful number, since it uses less digits than its factorization.

72169036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353 (or 1351 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 72169036 is about 8495.2360767668. The cubic root of 72169036 is about 416.3420740986.

The spelling of 72169036 in words is "seventy-two million, one hundred sixty-nine thousand, thirty-six".