172227742 has 32 divisors (see below), whose sum is σ = 278553600. Its totient is φ = 79623648.

The previous prime is 172227733. The next prime is 172227743. The reversal of 172227742 is 247722271.

It is a super-2 number, since 2×172227742² = 59324790228837128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 172227698 and 172227707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172227743) 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, 308928 + ... + 309484.

It is an arithmetic number, because the mean of its divisors is an integer number (8704800).

Almost surely, 2^172227742 is an apocalyptic number.

172227742 is a deficient number, since it is larger than the sum of its proper divisors (106325858).

172227742 is a wasteful number, since it uses less digits than its factorization.

172227742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760.

The product of its digits is 21952, while the sum is 34.

The square root of 172227742 is about 13123.5567587449. The cubic root of 172227742 is about 556.3751220951.

It can be divided in two parts, 17222 and 7742, that added together give a square (24964 = 158²).

The spelling of 172227742 in words is "one hundred seventy-two million, two hundred twenty-seven thousand, seven hundred forty-two".