172226731430 has 16 divisors (see below), whose sum is σ = 333854895024. Its totient is φ = 63591408480.

The previous prime is 172226731429. The next prime is 172226731489. The reversal of 172226731430 is 34137622271.

It is a super-2 number, since 2×172226731430² (a number of 23 digits) contains 22 as substring.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 662410376 + ... + 662410635.

It is an arithmetic number, because the mean of its divisors is an integer number (20865930939).

Almost surely, 2^172226731430 is an apocalyptic number.

172226731430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172226731430 is a deficient number, since it is larger than the sum of its proper divisors (161628163594).

172226731430 is a wasteful number, since it uses less digits than its factorization.

172226731430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324821031.

The product of its (nonzero) digits is 84672, while the sum is 38.

The spelling of 172226731430 in words is "one hundred seventy-two billion, two hundred twenty-six million, seven hundred thirty-one thousand, four hundred thirty".