481721238 has 12 divisors (see below), whose sum is σ = 1043729388. Its totient is φ = 160573740.

The previous prime is 481721237. The next prime is 481721239. The reversal of 481721238 is 832127184.

It is an interprime number because it is at equal distance from previous prime (481721237) and next prime (481721239).

It is a super-2 number, since 2×481721238² = 464110702280505288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481721237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13381128 + ... + 13381163.

It is an arithmetic number, because the mean of its divisors is an integer number (86977449).

Almost surely, 2^481721238 is an apocalyptic number.

481721238 is an abundant number, since it is smaller than the sum of its proper divisors (562008150).

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

481721238 is a wasteful number, since it uses less digits than its factorization.

481721238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26762299 (or 26762296 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 481721238 is about 21948.1488513268. The cubic root of 481721238 is about 783.9083033027.

The spelling of 481721238 in words is "four hundred eighty-one million, seven hundred twenty-one thousand, two hundred thirty-eight".