72229373 has 4 divisors (see below), whose sum is σ = 72277728. Its totient is φ = 72181020.

The previous prime is 72229369. The next prime is 72229397. The reversal of 72229373 is 37392227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37392227 = 23 ⋅1625749.

It is a cyclic number.

It is not a de Polignac number, because 72229373 - 2² = 72229369 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72229363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21863 + ... + 24948.

It is an arithmetic number, because the mean of its divisors is an integer number (18069432).

Almost surely, 2^72229373 is an apocalyptic number.

It is an amenable number.

72229373 is a deficient number, since it is larger than the sum of its proper divisors (48355).

72229373 is a wasteful number, since it uses less digits than its factorization.

72229373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48354.

The product of its digits is 31752, while the sum is 35.

The square root of 72229373 is about 8498.7865604450. The cubic root of 72229373 is about 416.4580695246.

The spelling of 72229373 in words is "seventy-two million, two hundred twenty-nine thousand, three hundred seventy-three".