2172663760 has 40 divisors (see below), whose sum is σ = 5225636520. Its totient is φ = 839096832.

The previous prime is 2172663751. The next prime is 2172663827. The reversal of 2172663760 is 673662712.

It can be written as a sum of positive squares in 4 ways, for example, as 95491984 + 2077171776 = 9772^2 + 45576^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465927 + ... + 470566.

It is an arithmetic number, because the mean of its divisors is an integer number (130640913).

Almost surely, 2^2172663760 is an apocalyptic number.

2172663760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2172663760 is an abundant number, since it is smaller than the sum of its proper divisors (3052972760).

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

2172663760 is a wasteful number, since it uses less digits than its factorization.

2172663760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936535 (or 936529 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 2172663760 is about 46611.8414139583. The cubic root of 2172663760 is about 1295.1821193559.

The spelling of 2172663760 in words is "two billion, one hundred seventy-two million, six hundred sixty-three thousand, seven hundred sixty".