172860002890 has 32 divisors (see below), whose sum is σ = 320032697040. Its totient is φ = 67175184384.

The previous prime is 172860002869. The next prime is 172860002893. The reversal of 172860002890 is 98200068271.

It can be written as a sum of positive squares in 8 ways, for example, as 63562981689 + 109297021201 = 252117^2 + 330601^2 .

It is not an unprimeable number, because it can be changed into a prime (172860002893) 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, 98085 + ... + 596104.

Almost surely, 2^172860002890 is an apocalyptic number.

172860002890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172860002890 is a deficient number, since it is larger than the sum of its proper divisors (147172694150).

172860002890 is a wasteful number, since it uses less digits than its factorization.

172860002890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694906.

The product of its (nonzero) digits is 96768, while the sum is 43.

The spelling of 172860002890 in words is "one hundred seventy-two billion, eight hundred sixty million, two thousand, eight hundred ninety".