2172928707 has 12 divisors (see below), whose sum is σ = 3219512520. Its totient is φ = 1448457660.

The previous prime is 2172928697. The next prime is 2172928717. The reversal of 2172928707 is 7078292712.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is an interprime number because it is at equal distance from previous prime (2172928697) and next prime (2172928717).

It is not a de Polignac number, because 2172928707 - 2⁷ = 2172928579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2172928717) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 237732 + ... + 246702.

It is an arithmetic number, because the mean of its divisors is an integer number (268292710).

Almost surely, 2^2172928707 is an apocalyptic number.

2172928707 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2172928707 is a deficient number, since it is larger than the sum of its proper divisors (1046583813).

2172928707 is an frugal number, since it uses more digits than its factorization.

2172928707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17951 (or 8974 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 45.

The square root of 2172928707 is about 46614.6833841012. The cubic root of 2172928707 is about 1295.2347645121.

The spelling of 2172928707 in words is "two billion, one hundred seventy-two million, nine hundred twenty-eight thousand, seven hundred seven".