63236420 has 72 divisors (see below), whose sum is σ = 146925576. Its totient is φ = 22843392.

The previous prime is 63236417. The next prime is 63236431. The reversal of 63236420 is 2463236.

It can be written as a sum of positive squares in 12 ways, for example, as 31719424 + 31516996 = 5632^2 + 5614^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 63236420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 178964 + ... + 179316.

It is an arithmetic number, because the mean of its divisors is an integer number (2040633).

Almost surely, 2^63236420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63236420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73462788).

63236420 is an abundant number, since it is smaller than the sum of its proper divisors (83689156).

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

63236420 is a wasteful number, since it uses less digits than its factorization.

63236420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 63236420 is about 7952.1330471767. The cubic root of 63236420 is about 398.4028395173.

Adding to 63236420 its reverse (2463236), we get a palindrome (65699656).

The spelling of 63236420 in words is "sixty-three million, two hundred thirty-six thousand, four hundred twenty".