72206422 has 8 divisors (see below), whose sum is σ = 114010200. Its totient is φ = 34203024.

The previous prime is 72206413. The next prime is 72206423. The reversal of 72206422 is 22460227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72206423) 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, 950047 + ... + 950122.

It is an arithmetic number, because the mean of its divisors is an integer number (14251275).

Almost surely, 2^72206422 is an apocalyptic number.

72206422 is a deficient number, since it is larger than the sum of its proper divisors (41803778).

72206422 is a wasteful number, since it uses less digits than its factorization.

72206422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1900190.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 72206422 is about 8497.4362015846. The cubic root of 72206422 is about 416.4139547768.

Adding to 72206422 its reverse (22460227), we get a palindrome (94666649).

The spelling of 72206422 in words is "seventy-two million, two hundred six thousand, four hundred twenty-two".