72273786 has 16 divisors (see below), whose sum is σ = 155666784. Its totient is φ = 22238064.

The previous prime is 72273769. The next prime is 72273787. The reversal of 72273786 is 68737227.

It is not an unprimeable number, because it can be changed into a prime (72273787) 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, 463216 + ... + 463371.

It is an arithmetic number, because the mean of its divisors is an integer number (9729174).

Almost surely, 2^72273786 is an apocalyptic number.

72273786 is an abundant number, since it is smaller than the sum of its proper divisors (83392998).

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

72273786 is a wasteful number, since it uses less digits than its factorization.

72273786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926605.

The product of its digits is 197568, while the sum is 42.

The square root of 72273786 is about 8501.3990613310. The cubic root of 72273786 is about 416.5434104403.

The spelling of 72273786 in words is "seventy-two million, two hundred seventy-three thousand, seven hundred eighty-six".