72740830 has 16 divisors (see below), whose sum is σ = 132592320. Its totient is φ = 28727712.

The previous prime is 72740827. The next prime is 72740831. The reversal of 72740830 is 3804727.

It is a junction number, because it is equal to n+sod(n) for n = 72740792 and 72740801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72740831) 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, 45249 + ... + 46828.

It is an arithmetic number, because the mean of its divisors is an integer number (8287020).

Almost surely, 2^72740830 is an apocalyptic number.

72740830 is a deficient number, since it is larger than the sum of its proper divisors (59851490).

72740830 is a wasteful number, since it uses less digits than its factorization.

72740830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92163.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 72740830 is about 8528.8234827554. The cubic root of 72740830 is about 417.4387398613.

The spelling of 72740830 in words is "seventy-two million, seven hundred forty thousand, eight hundred thirty".