72350540 has 24 divisors (see below), whose sum is σ = 156044112. Its totient is φ = 28157760.

The previous prime is 72350539. The next prime is 72350543. The reversal of 72350540 is 4505327.

It is not an unprimeable number, because it can be changed into a prime (72350543) 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, 48146 + ... + 49625.

It is an arithmetic number, because the mean of its divisors is an integer number (6501838).

Almost surely, 2^72350540 is an apocalyptic number.

It is an amenable number.

72350540 is an abundant number, since it is smaller than the sum of its proper divisors (83693572).

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

72350540 is a wasteful number, since it uses less digits than its factorization.

72350540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97817 (or 97815 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 72350540 is about 8505.9120616193. The cubic root of 72350540 is about 416.6908131784.

Adding to 72350540 its reverse (4505327), we get a palindrome (76855867).

The spelling of 72350540 in words is "seventy-two million, three hundred fifty thousand, five hundred forty".