173399940 has 168 divisors, whose sum is σ = 624321600. Its totient is φ = 39610944.

The previous prime is 173399929. The next prime is 173399959. The reversal of 173399940 is 49993371.

173399940 is a `hidden beast` number, since 173 + 399 + 94 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 101211 + ... + 102909.

It is an arithmetic number, because the mean of its divisors is an integer number (3716200).

Almost surely, 2^173399940 is an apocalyptic number.

173399940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 173399940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312160800).

173399940 is an abundant number, since it is smaller than the sum of its proper divisors (450921660).

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

173399940 is a wasteful number, since it uses less digits than its factorization.

173399940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733 (or 1716 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 45.

The square root of 173399940 is about 13168.1410988795. The cubic root of 173399940 is about 557.6345161274.

The spelling of 173399940 in words is "one hundred seventy-three million, three hundred ninety-nine thousand, nine hundred forty".