172203420676 has 27 divisors (see below), whose sum is σ = 350568790677. Its totient is φ = 73798976160.

The previous prime is 172203420673. The next prime is 172203420691. The reversal of 172203420676 is 676024302271.

It is a happy number.

The square root of 172203420676 is 414974.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 163033443076 + 9169977600 = 403774^2 + 95760^2 .

It is not an unprimeable number, because it can be changed into a prime (172203420673) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5794816 + ... + 5824456.

Almost surely, 2^172203420676 is an apocalyptic number.

172203420676 is the 414974-th square number.

It is an amenable number.

172203420676 is an abundant number, since it is smaller than the sum of its proper divisors (178365370001).

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

172203420676 is an frugal number, since it uses more digits than its factorization.

172203420676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59300 (or 29650 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 40.

The spelling of 172203420676 in words is "one hundred seventy-two billion, two hundred three million, four hundred twenty thousand, six hundred seventy-six".