179840340 has 72 divisors (see below), whose sum is σ = 552464640. Its totient is φ = 47346624.

The previous prime is 179840329. The next prime is 179840359. The reversal of 179840340 is 43048971.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 179840295 and 179840304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7897 + ... + 20543.

It is an arithmetic number, because the mean of its divisors is an integer number (7673120).

Almost surely, 2^179840340 is an apocalyptic number.

179840340 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 179840340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276232320).

179840340 is an abundant number, since it is smaller than the sum of its proper divisors (372624300).

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

179840340 is a wasteful number, since it uses less digits than its factorization.

179840340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12741 (or 12736 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 179840340 is about 13410.4563680734. The cubic root of 179840340 is about 564.4546281542.

The spelling of 179840340 in words is "one hundred seventy-nine million, eight hundred forty thousand, three hundred forty".