72653222 has 8 divisors (see below), whose sum is σ = 109374096. Its totient is φ = 36195192.

The previous prime is 72653221. The next prime is 72653263. The reversal of 72653222 is 22235627.

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 (72653221) 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, 65018 + ... + 66125.

It is an arithmetic number, because the mean of its divisors is an integer number (13671762).

Almost surely, 2^72653222 is an apocalyptic number.

72653222 is a deficient number, since it is larger than the sum of its proper divisors (36720874).

72653222 is a wasteful number, since it uses less digits than its factorization.

72653222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131422.

The product of its digits is 10080, while the sum is 29.

The square root of 72653222 is about 8523.6859397798. The cubic root of 72653222 is about 417.2710868169.

Adding to 72653222 its reverse (22235627), we get a palindrome (94888849).

The spelling of 72653222 in words is "seventy-two million, six hundred fifty-three thousand, two hundred twenty-two".