180401672 has 32 divisors (see below), whose sum is σ = 371844000. Its totient is φ = 81369600.

The previous prime is 180401657. The next prime is 180401687. The reversal of 180401672 is 276104081.

It is an interprime number because it is at equal distance from previous prime (180401657) and next prime (180401687).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3704 + ... + 19352.

It is an arithmetic number, because the mean of its divisors is an integer number (11620125).

Almost surely, 2^180401672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 180401672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185922000).

180401672 is an abundant number, since it is smaller than the sum of its proper divisors (191442328).

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

180401672 is a wasteful number, since it uses less digits than its factorization.

180401672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15797 (or 15793 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 180401672 is about 13431.3689548013. The cubic root of 180401672 is about 565.0412917847.

The spelling of 180401672 in words is "one hundred eighty million, four hundred one thousand, six hundred seventy-two".