2172973608 has 256 divisors, whose sum is σ = 6911520000. Its totient is φ = 630789120.

The previous prime is 2172973597. The next prime is 2172973619. The reversal of 2172973608 is 8063792712.

2172973608 is a `hidden beast` number, since 2 + 17 + 29 + 7 + 3 + 608 = 666.

It is an interprime number because it is at equal distance from previous prime (2172973597) and next prime (2172973619).

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 63 ways as a sum of consecutive naturals, for example, 9016368 + ... + 9016608.

It is an arithmetic number, because the mean of its divisors is an integer number (26998125).

Almost surely, 2^2172973608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2172973608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3455760000).

2172973608 is an abundant number, since it is smaller than the sum of its proper divisors (4738546392).

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

2172973608 is a wasteful number, since it uses less digits than its factorization.

2172973608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 2172973608 is about 46615.1650002443. The cubic root of 2172973608 is about 1295.2436859485.

The spelling of 2172973608 in words is "two billion, one hundred seventy-two million, nine hundred seventy-three thousand, six hundred eight".