2172644234 has 8 divisors (see below), whose sum is σ = 3450670308. Its totient is φ = 1022420800.

The previous prime is 2172644191. The next prime is 2172644297. The reversal of 2172644234 is 4324462712.

It can be written as a sum of positive squares in 2 ways, for example, as 2167368025 + 5276209 = 46555^2 + 2297^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2172644194 and 2172644203.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31950617 + ... + 31950684.

Almost surely, 2^2172644234 is an apocalyptic number.

2172644234 is a deficient number, since it is larger than the sum of its proper divisors (1278026074).

2172644234 is a wasteful number, since it uses less digits than its factorization.

2172644234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63901320.

The product of its digits is 64512, while the sum is 35.

The square root of 2172644234 is about 46611.6319602736. The cubic root of 2172644234 is about 1295.1782393565.

The spelling of 2172644234 in words is "two billion, one hundred seventy-two million, six hundred forty-four thousand, two hundred thirty-four".