481981140 has 36 divisors (see below), whose sum is σ = 1462010004. Its totient is φ = 128528256.

The previous prime is 481981121. The next prime is 481981153. The reversal of 481981140 is 41189184.

It can be written as a sum of positive squares in 2 ways, for example, as 143568324 + 338412816 = 11982^2 + 18396^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 = 481981095 and 481981104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1338657 + ... + 1339016.

It is an arithmetic number, because the mean of its divisors is an integer number (40611389).

Almost surely, 2^481981140 is an apocalyptic number.

It is an amenable number.

481981140 is an abundant number, since it is smaller than the sum of its proper divisors (980028864).

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

481981140 is a wasteful number, since it uses less digits than its factorization.

481981140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2677688 (or 2677683 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 481981140 is about 21954.0688711683. The cubic root of 481981140 is about 784.0492580636.

The spelling of 481981140 in words is "four hundred eighty-one million, nine hundred eighty-one thousand, one hundred forty".