72221230 has 8 divisors (see below), whose sum is σ = 129998232. Its totient is φ = 28888488.

The previous prime is 72221197. The next prime is 72221239. The reversal of 72221230 is 3212227.

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

It is a junction number, because it is equal to n+sod(n) for n = 72221198 and 72221207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72221239) 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, 3611052 + ... + 3611071.

It is an arithmetic number, because the mean of its divisors is an integer number (16249779).

Almost surely, 2^72221230 is an apocalyptic number.

72221230 is a deficient number, since it is larger than the sum of its proper divisors (57777002).

72221230 is a wasteful number, since it uses less digits than its factorization.

72221230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7222130.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 72221230 is about 8498.3074785512. The cubic root of 72221230 is about 416.4424187103.

Adding to 72221230 its reverse (3212227), we get a palindrome (75433457).

It can be divided in two parts, 722 and 21230, that added together give a cube (21952 = 28³).

The spelling of 72221230 in words is "seventy-two million, two hundred twenty-one thousand, two hundred thirty".