180421296 has 80 divisors (see below), whose sum is σ = 526037760. Its totient is φ = 52783360.

The previous prime is 180421291. The next prime is 180421301. The reversal of 180421296 is 692124081.

It is an interprime number because it is at equal distance from previous prime (180421291) and next prime (180421301).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (180421291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9421 + ... + 21203.

It is an arithmetic number, because the mean of its divisors is an integer number (6575472).

Almost surely, 2^180421296 is an apocalyptic number.

180421296 is a gapful number since it is divisible by the number (16) 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 180421296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263018880).

180421296 is an abundant number, since it is smaller than the sum of its proper divisors (345616464).

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

180421296 is a wasteful number, since it uses less digits than its factorization.

180421296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11834 (or 11828 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 180421296 is about 13432.0994635984. The cubic root of 180421296 is about 565.0617793411.

The spelling of 180421296 in words is "one hundred eighty million, four hundred twenty-one thousand, two hundred ninety-six".