72040434 has 32 divisors (see below), whose sum is σ = 146893824. Its totient is φ = 23548560.

The previous prime is 72040429. The next prime is 72040453. The reversal of 72040434 is 43404027.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111717 + ... + 112359.

It is an arithmetic number, because the mean of its divisors is an integer number (4590432).

Almost surely, 2^72040434 is an apocalyptic number.

72040434 is an abundant number, since it is smaller than the sum of its proper divisors (74853390).

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

72040434 is a wasteful number, since it uses less digits than its factorization.

72040434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982.

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 72040434 is about 8487.6636361251. The cubic root of 72040434 is about 416.0946260641.

The spelling of 72040434 in words is "seventy-two million, forty thousand, four hundred thirty-four".