7222138506 has 48 divisors (see below), whose sum is σ = 17812716480. Its totient is φ = 2093372160.

The previous prime is 7222138499. The next prime is 7222138519. The reversal of 7222138506 is 6058312227.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 788391 + ... + 797498.

It is an arithmetic number, because the mean of its divisors is an integer number (371098260).

Almost surely, 2^7222138506 is an apocalyptic number.

7222138506 is an abundant number, since it is smaller than the sum of its proper divisors (10590577974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7222138506 is a wasteful number, since it uses less digits than its factorization.

7222138506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585931 (or 1585928 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 7222138506 is about 84983.1660153939. The cubic root of 7222138506 is about 1932.9558638875.

The spelling of 7222138506 in words is "seven billion, two hundred twenty-two million, one hundred thirty-eight thousand, five hundred six".