173880945 has 64 divisors (see below), whose sum is σ = 362903040. Its totient is φ = 77324544.

The previous prime is 173880937. The next prime is 173880961. The reversal of 173880945 is 549088371.

It is not a de Polignac number, because 173880945 - 2³ = 173880937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 173880945.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 32479 + ... + 37451.

It is an arithmetic number, because the mean of its divisors is an integer number (5670360).

Almost surely, 2^173880945 is an apocalyptic number.

173880945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

173880945 is an abundant number, since it is smaller than the sum of its proper divisors (189022095).

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

173880945 is a wasteful number, since it uses less digits than its factorization.

173880945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5031 (or 5025 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 173880945 is about 13186.3924179436. The cubic root of 173880945 is about 558.1496592440.

The spelling of 173880945 in words is "one hundred seventy-three million, eight hundred eighty thousand, nine hundred forty-five".