63215420 has 24 divisors (see below), whose sum is σ = 132986448. Its totient is φ = 25241600.

The previous prime is 63215381. The next prime is 63215429. The reversal of 63215420 is 2451236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63215429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10355 + ... + 15285.

It is an arithmetic number, because the mean of its divisors is an integer number (5541102).

Almost surely, 2^63215420 is an apocalyptic number.

It is an amenable number.

63215420 is an abundant number, since it is smaller than the sum of its proper divisors (69771028).

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

63215420 is a wasteful number, since it uses less digits than its factorization.

63215420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5581 (or 5579 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 63215420 is about 7950.8125370933. The cubic root of 63215420 is about 398.3587331519.

Adding to 63215420 its reverse (2451236), we get a palindrome (65666656).

The spelling of 63215420 in words is "sixty-three million, two hundred fifteen thousand, four hundred twenty".