63228740 has 12 divisors (see below), whose sum is σ = 132780396. Its totient is φ = 25291488.

The previous prime is 63228733. The next prime is 63228749. The reversal of 63228740 is 4782236.

It can be written as a sum of positive squares in 2 ways, for example, as 33895684 + 29333056 = 5822^2 + 5416^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 63228697 and 63228706.

It is not an unprimeable number, because it can be changed into a prime (63228749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1580699 + ... + 1580738.

It is an arithmetic number, because the mean of its divisors is an integer number (11065033).

Almost surely, 2^63228740 is an apocalyptic number.

It is an amenable number.

63228740 is an abundant number, since it is smaller than the sum of its proper divisors (69551656).

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

63228740 is a wasteful number, since it uses less digits than its factorization.

63228740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161446 (or 3161444 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 63228740 is about 7951.6501432093. The cubic root of 63228740 is about 398.3867103221.

The spelling of 63228740 in words is "sixty-three million, two hundred twenty-eight thousand, seven hundred forty".