2172746562 has 16 divisors (see below), whose sum is σ = 4966277952. Its totient is φ = 620784720.

The previous prime is 2172746549. The next prime is 2172746593. The reversal of 2172746562 is 2656472712.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 51732061 = 2172746562 / (2 + 1 + 7 + 2 + 7 + 4 + 6 + 5 + 6 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25865989 + ... + 25866072.

It is an arithmetic number, because the mean of its divisors is an integer number (310392372).

Almost surely, 2^2172746562 is an apocalyptic number.

2172746562 is an abundant number, since it is smaller than the sum of its proper divisors (2793531390).

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

2172746562 is a wasteful number, since it uses less digits than its factorization.

2172746562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51732073.

The product of its digits is 282240, while the sum is 42.

The square root of 2172746562 is about 46612.7296132720. The cubic root of 2172746562 is about 1295.1985726316.

The spelling of 2172746562 in words is "two billion, one hundred seventy-two million, seven hundred forty-six thousand, five hundred sixty-two".