180561360 has 160 divisors (see below), whose sum is σ = 660529152. Its totient is φ = 39928320.

The previous prime is 180561349. The next prime is 180561371. The reversal of 180561360 is 63165081.

It is an interprime number because it is at equal distance from previous prime (180561349) and next prime (180561371).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50347 + ... + 53813.

Almost surely, 2^180561360 is an apocalyptic number.

180561360 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 180561360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330264576).

180561360 is an abundant number, since it is smaller than the sum of its proper divisors (479967792).

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

180561360 is a wasteful number, since it uses less digits than its factorization.

180561360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3521 (or 3515 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 180561360 is about 13437.3122312462. The cubic root of 180561360 is about 565.2079637498.

The spelling of 180561360 in words is "one hundred eighty million, five hundred sixty-one thousand, three hundred sixty".