172093388 has 12 divisors (see below), whose sum is σ = 301287672. Its totient is φ = 86011200.

The previous prime is 172093387. The next prime is 172093391. The reversal of 172093388 is 883390271.

It is a super-2 number, since 2×172093388² = 59232268386637088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (172093387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4163 + ... + 19013.

It is an arithmetic number, because the mean of its divisors is an integer number (25107306).

Almost surely, 2^172093388 is an apocalyptic number.

It is an amenable number.

172093388 is a deficient number, since it is larger than the sum of its proper divisors (129194284).

172093388 is a wasteful number, since it uses less digits than its factorization.

172093388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17752 (or 17750 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 172093388 is about 13118.4369495760. The cubic root of 172093388 is about 556.2304093088.

The spelling of 172093388 in words is "one hundred seventy-two million, ninety-three thousand, three hundred eighty-eight".