63220020 has 48 divisors (see below), whose sum is σ = 178331328. Its totient is φ = 16733440.

The previous prime is 63219983. The next prime is 63220037. The reversal of 63220020 is 2002236.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4375 + ... + 12065.

It is an arithmetic number, because the mean of its divisors is an integer number (3715236).

Almost surely, 2^63220020 is an apocalyptic number.

63220020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63220020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89165664).

63220020 is an abundant number, since it is smaller than the sum of its proper divisors (115111308).

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

63220020 is a wasteful number, since it uses less digits than its factorization.

63220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7840 (or 7838 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 63220020 is about 7951.1018104411. The cubic root of 63220020 is about 398.3683953817.

Adding to 63220020 its reverse (2002236), we get a palindrome (65222256).

The spelling of 63220020 in words is "sixty-three million, two hundred twenty thousand, twenty".