172948893 has 16 divisors (see below), whose sum is σ = 249525696. Its totient is φ = 105920640.

The previous prime is 172948889. The next prime is 172948901. The reversal of 172948893 is 398849271.

It is not a de Polignac number, because 172948893 - 2² = 172948889 is a prime.

It is a super-2 number, since 2×172948893² = 59822639179850898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172948813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2280 + ... + 18737.

It is an arithmetic number, because the mean of its divisors is an integer number (15595356).

Almost surely, 2^172948893 is an apocalyptic number.

172948893 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

172948893 is a deficient number, since it is larger than the sum of its proper divisors (76576803).

172948893 is a wasteful number, since it uses less digits than its factorization.

172948893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21244.

The product of its digits is 870912, while the sum is 51.

The square root of 172948893 is about 13151.0034978324. The cubic root of 172948893 is about 557.1505909793.

The spelling of 172948893 in words is "one hundred seventy-two million, nine hundred forty-eight thousand, eight hundred ninety-three".