63147840 has 112 divisors (see below), whose sum is σ = 229160832. Its totient is φ = 14432256.

The previous prime is 63147827. The next prime is 63147841. The reversal of 63147840 is 4874136.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63147841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2022 + ... + 11418.

Almost surely, 2^63147840 is an apocalyptic number.

63147840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63147840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114580416).

63147840 is an abundant number, since it is smaller than the sum of its proper divisors (166012992).

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

63147840 is a wasteful number, since it uses less digits than its factorization.

63147840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9424 (or 9414 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 63147840 is about 7946.5615205572. The cubic root of 63147840 is about 398.2167283365.

The spelling of 63147840 in words is "sixty-three million, one hundred forty-seven thousand, eight hundred forty".