72140229 has 24 divisors (see below), whose sum is σ = 119351232. Its totient is φ = 41132160.

The previous prime is 72140221. The next prime is 72140239. The reversal of 72140229 is 92204127.

It is not a de Polignac number, because 72140229 - 2³ = 72140221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72140221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36394 + ... + 38324.

It is an arithmetic number, because the mean of its divisors is an integer number (4972968).

Almost surely, 2^72140229 is an apocalyptic number.

It is an amenable number.

72140229 is a deficient number, since it is larger than the sum of its proper divisors (47211003).

72140229 is a wasteful number, since it uses less digits than its factorization.

72140229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2537 (or 2534 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 72140229 is about 8493.5404278781. The cubic root of 72140229 is about 416.2866710111.

The spelling of 72140229 in words is "seventy-two million, one hundred forty thousand, two hundred twenty-nine".