72012022 has 4 divisors (see below), whose sum is σ = 108018036. Its totient is φ = 36006010.

The previous prime is 72012013. The next prime is 72012041. The reversal of 72012022 is 22021027.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 72011987 and 72012005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18003004 + ... + 18003007.

It is an arithmetic number, because the mean of its divisors is an integer number (27004509).

Almost surely, 2^72012022 is an apocalyptic number.

72012022 is a deficient number, since it is larger than the sum of its proper divisors (36006014).

72012022 is a wasteful number, since it uses less digits than its factorization.

72012022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36006013.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 72012022 is about 8485.9897478137. The cubic root of 72012022 is about 416.0399177363.

Adding to 72012022 its reverse (22021027), we get a palindrome (94033049).

The spelling of 72012022 in words is "seventy-two million, twelve thousand, twenty-two".