173401020 has 192 divisors, whose sum is σ = 615565440. Its totient is φ = 40144896.

The previous prime is 173400989. The next prime is 173401021. The reversal of 173401020 is 20104371.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 173400984 and 173401002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173401021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 118614 + ... + 120066.

It is an arithmetic number, because the mean of its divisors is an integer number (3206070).

Almost surely, 2^173401020 is an apocalyptic number.

173401020 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 173401020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307782720).

173401020 is an abundant number, since it is smaller than the sum of its proper divisors (442164420).

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

173401020 is a wasteful number, since it uses less digits than its factorization.

173401020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501 (or 1493 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 173401020 is about 13168.1821068817. The cubic root of 173401020 is about 557.6356738441.

Adding to 173401020 its reverse (20104371), we get a palindrome (193505391).

The spelling of 173401020 in words is "one hundred seventy-three million, four hundred one thousand, twenty".