72078936 has 24 divisors (see below), whose sum is σ = 180301380. Its totient is φ = 24012448.

The previous prime is 72078931. The next prime is 72078947. The reversal of 72078936 is 63987027.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72078931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40726 + ... + 42458.

Almost surely, 2^72078936 is an apocalyptic number.

It is an amenable number.

72078936 is an abundant number, since it is smaller than the sum of its proper divisors (108222444).

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

72078936 is an equidigital number, since it uses as much as digits as its factorization.

72078936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3475 (or 1738 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 72078936 is about 8489.9314484865. The cubic root of 72078936 is about 416.1687401007.

The spelling of 72078936 in words is "seventy-two million, seventy-eight thousand, nine hundred thirty-six".