63928940 has 12 divisors (see below), whose sum is σ = 134250816. Its totient is φ = 25571568.

The previous prime is 63928927. The next prime is 63928957. The reversal of 63928940 is 4982936.

It is a happy number.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1598204 + ... + 1598243.

It is an arithmetic number, because the mean of its divisors is an integer number (11187568).

Almost surely, 2^63928940 is an apocalyptic number.

It is an amenable number.

63928940 is an abundant number, since it is smaller than the sum of its proper divisors (70321876).

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

63928940 is a wasteful number, since it uses less digits than its factorization.

63928940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3196456 (or 3196454 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 63928940 is about 7995.5575165213. The cubic root of 63928940 is about 399.8519035087.

The spelling of 63928940 in words is "sixty-three million, nine hundred twenty-eight thousand, nine hundred forty".