63818028 has 18 divisors (see below), whose sum is σ = 161317884. Its totient is φ = 21272664.

The previous prime is 63818023. The next prime is 63818033. The reversal of 63818028 is 82081836.

63818028 is a `hidden beast` number, since 638 + 18 + 0 + 2 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (63818023) and next prime (63818033).

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1772723 = 63818028 / (6 + 3 + 8 + 1 + 8 + 0 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 63817983 and 63818001.

It is not an unprimeable number, because it can be changed into a prime (63818021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 886326 + ... + 886397.

Almost surely, 2^63818028 is an apocalyptic number.

It is an amenable number.

63818028 is an abundant number, since it is smaller than the sum of its proper divisors (97499856).

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

63818028 is a wasteful number, since it uses less digits than its factorization.

63818028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772733 (or 1772728 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 63818028 is about 7988.6186540603. The cubic root of 63818028 is about 399.6205317902.

The spelling of 63818028 in words is "sixty-three million, eight hundred eighteen thousand, twenty-eight".