63528840 has 128 divisors (see below), whose sum is σ = 215568000. Its totient is φ = 16637184.

The previous prime is 63528811. The next prime is 63528841. The reversal of 63528840 is 4882536.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 63528795 and 63528804.

It is not an unprimeable number, because it can be changed into a prime (63528841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63222 + ... + 64218.

It is an arithmetic number, because the mean of its divisors is an integer number (1684125).

Almost surely, 2^63528840 is an apocalyptic number.

63528840 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 63528840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107784000).

63528840 is an abundant number, since it is smaller than the sum of its proper divisors (152039160).

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

63528840 is a wasteful number, since it uses less digits than its factorization.

63528840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076 (or 1066 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 63528840 is about 7970.4981023773. The cubic root of 63528840 is about 399.0159980018.

The spelling of 63528840 in words is "sixty-three million, five hundred twenty-eight thousand, eight hundred forty".