63928040 has 64 divisors (see below), whose sum is σ = 163762560. Its totient is φ = 22232320.

The previous prime is 63928031. The next prime is 63928043. The reversal of 63928040 is 4082936.

It is a junction number, because it is equal to n+sod(n) for n = 63927988 and 63928006.

It is not an unprimeable number, because it can be changed into a prime (63928043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6962 + ... + 13278.

It is an arithmetic number, because the mean of its divisors is an integer number (2558790).

Almost surely, 2^63928040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63928040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81881280).

63928040 is an abundant number, since it is smaller than the sum of its proper divisors (99834520).

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

63928040 is a wasteful number, since it uses less digits than its factorization.

63928040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6362 (or 6358 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 63928040 is about 7995.5012350696. The cubic root of 63928040 is about 399.8500271107.

The spelling of 63928040 in words is "sixty-three million, nine hundred twenty-eight thousand, forty".