481431990 has 96 divisors (see below), whose sum is σ = 1259362080. Its totient is φ = 117731328.

The previous prime is 481431989. The next prime is 481432009. The reversal of 481431990 is 99134184.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1363654 + ... + 1364006.

It is an arithmetic number, because the mean of its divisors is an integer number (13118355).

Almost surely, 2^481431990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 481431990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (629681040).

481431990 is an abundant number, since it is smaller than the sum of its proper divisors (777930090).

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

481431990 is a wasteful number, since it uses less digits than its factorization.

481431990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658 (or 645 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 481431990 is about 21941.5585134694. The cubic root of 481431990 is about 783.7513734653.

The spelling of 481431990 in words is "four hundred eighty-one million, four hundred thirty-one thousand, nine hundred ninety".