72267147 has 20 divisors (see below), whose sum is σ = 108435360. Its totient is φ = 47963664.

The previous prime is 72267103. The next prime is 72267157. The reversal of 72267147 is 74176227.

It is a happy number.

It is not a de Polignac number, because 72267147 - 2¹¹ = 72265099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72267157) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17493 + ... + 21225.

It is an arithmetic number, because the mean of its divisors is an integer number (5421768).

Almost surely, 2^72267147 is an apocalyptic number.

72267147 is a deficient number, since it is larger than the sum of its proper divisors (36168213).

72267147 is a wasteful number, since it uses less digits than its factorization.

72267147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3984 (or 3975 counting only the distinct ones).

The product of its digits is 32928, while the sum is 36.

The square root of 72267147 is about 8501.0085872207. The cubic root of 72267147 is about 416.5306556250.

The spelling of 72267147 in words is "seventy-two million, two hundred sixty-seven thousand, one hundred forty-seven".