72122030 has 32 divisors (see below), whose sum is σ = 132295680. Its totient is φ = 28304640.

The previous prime is 72122009. The next prime is 72122033. The reversal of 72122030 is 3022127.

It is a super-2 number, since 2×72122030² = 10403174422641800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72122033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138170 + ... + 138690.

It is an arithmetic number, because the mean of its divisors is an integer number (4134240).

Almost surely, 2^72122030 is an apocalyptic number.

72122030 is a deficient number, since it is larger than the sum of its proper divisors (60173650).

72122030 is a wasteful number, since it uses less digits than its factorization.

72122030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 72122030 is about 8492.4690167230. The cubic root of 72122030 is about 416.2516621660.

Adding to 72122030 its reverse (3022127), we get a palindrome (75144157).

The spelling of 72122030 in words is "seventy-two million, one hundred twenty-two thousand, thirty".