72436040 has 32 divisors (see below), whose sum is σ = 163503360. Its totient is φ = 28881600.

The previous prime is 72435991. The next prime is 72436061. The reversal of 72436040 is 4063427.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10505 + ... + 15975.

It is an arithmetic number, because the mean of its divisors is an integer number (5109480).

Almost surely, 2^72436040 is an apocalyptic number.

It is an amenable number.

72436040 is an abundant number, since it is smaller than the sum of its proper divisors (91067320).

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

72436040 is a wasteful number, since it uses less digits than its factorization.

72436040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5813 (or 5809 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 72436040 is about 8510.9364937121. The cubic root of 72436040 is about 416.8548895381.

Adding to 72436040 its reverse (4063427), we get a palindrome (76499467).

The spelling of 72436040 in words is "seventy-two million, four hundred thirty-six thousand, forty".