639028482 has 72 divisors (see below), whose sum is σ = 1398318768. Its totient is φ = 194652720.

The previous prime is 639028477. The next prime is 639028483. The reversal of 639028482 is 284820936.

It is not an unprimeable number, because it can be changed into a prime (639028483) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2081373 + ... + 2081679.

It is an arithmetic number, because the mean of its divisors is an integer number (19421094).

Almost surely, 2^639028482 is an apocalyptic number.

639028482 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

639028482 is an abundant number, since it is smaller than the sum of its proper divisors (759290286).

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

639028482 is a wasteful number, since it uses less digits than its factorization.

639028482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 639028482 is about 25279.0126785047. The cubic root of 639028482 is about 861.3375984987.

The spelling of 639028482 in words is "six hundred thirty-nine million, twenty-eight thousand, four hundred eighty-two".