72606040 has 32 divisors (see below), whose sum is σ = 175931280. Its totient is φ = 26808192.

The previous prime is 72606007. The next prime is 72606041. The reversal of 72606040 is 4060627.

It is a junction number, because it is equal to n+sod(n) for n = 72605996 and 72606014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72606041) 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, 69294 + ... + 70333.

Almost surely, 2^72606040 is an apocalyptic number.

It is an amenable number.

72606040 is an abundant number, since it is smaller than the sum of its proper divisors (103325240).

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

72606040 is a wasteful number, since it uses less digits than its factorization.

72606040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139651 (or 139647 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 72606040 is about 8520.9177909425. The cubic root of 72606040 is about 417.1807400654.

Adding to 72606040 its reverse (4060627), we get a palindrome (76666667).

The spelling of 72606040 in words is "seventy-two million, six hundred six thousand, forty".