63432020 has 12 divisors (see below), whose sum is σ = 133207284. Its totient is φ = 25372800.

The previous prime is 63432011. The next prime is 63432037. The reversal of 63432020 is 2023436.

It can be written as a sum of positive squares in 2 ways, for example, as 23464336 + 39967684 = 4844^2 + 6322^2 .

It is a super-2 number, since 2×63432020² = 8047242322560800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 3171601 = 63432020 / (6 + 3 + 4 + 3 + 2 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 63431983 and 63432001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1585781 + ... + 1585820.

It is an arithmetic number, because the mean of its divisors is an integer number (11100607).

Almost surely, 2^63432020 is an apocalyptic number.

It is an amenable number.

63432020 is an abundant number, since it is smaller than the sum of its proper divisors (69775264).

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

63432020 is a wasteful number, since it uses less digits than its factorization.

63432020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3171610 (or 3171608 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 63432020 is about 7964.4221384856. The cubic root of 63432020 is about 398.8131905241.

Adding to 63432020 its reverse (2023436), we get a palindrome (65455456).

The spelling of 63432020 in words is "sixty-three million, four hundred thirty-two thousand, twenty".