481919220 has 60 divisors (see below), whose sum is σ = 1511803524. Its totient is φ = 128511360.

The previous prime is 481919219. The next prime is 481919233. The reversal of 481919220 is 22919184.

481919220 is a `hidden beast` number, since 481 + 91 + 92 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 159213924 + 322705296 = 12618^2 + 17964^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×481919220² = 464492269210816800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 147121 + ... + 150360.

Almost surely, 2^481919220 is an apocalyptic number.

It is an amenable number.

481919220 is an abundant number, since it is smaller than the sum of its proper divisors (1029884304).

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

481919220 is a wasteful number, since it uses less digits than its factorization.

481919220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297502 (or 297491 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 481919220 is about 21952.6586089248. The cubic root of 481919220 is about 784.0156810865.

Subtracting from 481919220 its sum of digits (36), we obtain a palindrome (481919184).

The spelling of 481919220 in words is "four hundred eighty-one million, nine hundred nineteen thousand, two hundred twenty".