181078480 has 80 divisors (see below), whose sum is σ = 461381184. Its totient is φ = 65546240.

The previous prime is 181078477. The next prime is 181078487. The reversal of 181078480 is 84870181.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×181078480² = 65578831838220800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181078487) 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, 305064 + ... + 305656.

Almost surely, 2^181078480 is an apocalyptic number.

181078480 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 181078480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230690592).

181078480 is an abundant number, since it is smaller than the sum of its proper divisors (280302704).

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

181078480 is a wasteful number, since it uses less digits than its factorization.

181078480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964 (or 958 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 37.

The square root of 181078480 is about 13456.5404172098. The cubic root of 181078480 is about 565.7470265910.

The spelling of 181078480 in words is "one hundred eighty-one million, seventy-eight thousand, four hundred eighty".