173900640 has 48 divisors (see below), whose sum is σ = 547788528. Its totient is φ = 46373376.

The previous prime is 173900627. The next prime is 173900647. The reversal of 173900640 is 46009371.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 173900598 and 173900607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173900647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180667 + ... + 181626.

It is an arithmetic number, because the mean of its divisors is an integer number (11412261).

Almost surely, 2^173900640 is an apocalyptic number.

173900640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

173900640 is an abundant number, since it is smaller than the sum of its proper divisors (373887888).

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

173900640 is a wasteful number, since it uses less digits than its factorization.

173900640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362311 (or 362303 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 173900640 is about 13187.1391893769. The cubic root of 173900640 is about 558.1707317898.

The spelling of 173900640 in words is "one hundred seventy-three million, nine hundred thousand, six hundred forty".