63428556 has 12 divisors (see below), whose sum is σ = 147999992. Its totient is φ = 21142848.

The previous prime is 63428551. The next prime is 63428557. The reversal of 63428556 is 65582436.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (63428551) 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 3 ways as a sum of consecutive naturals, for example, 2642845 + ... + 2642868.

Almost surely, 2^63428556 is an apocalyptic number.

It is an amenable number.

63428556 is an abundant number, since it is smaller than the sum of its proper divisors (84571436).

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

63428556 is a wasteful number, since it uses less digits than its factorization.

63428556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5285720 (or 5285718 counting only the distinct ones).

The product of its digits is 172800, while the sum is 39.

The square root of 63428556 is about 7964.2046683897. The cubic root of 63428556 is about 398.8059307099.

The spelling of 63428556 in words is "sixty-three million, four hundred twenty-eight thousand, five hundred fifty-six".