63239420 has 24 divisors (see below), whose sum is σ = 138577824. Its totient is φ = 24195776.

The previous prime is 63239417. The next prime is 63239431. The reversal of 63239420 is 2493236.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68279 + ... + 69198.

It is an arithmetic number, because the mean of its divisors is an integer number (5774076).

Almost surely, 2^63239420 is an apocalyptic number.

It is an amenable number.

63239420 is an abundant number, since it is smaller than the sum of its proper divisors (75338404).

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

63239420 is a wasteful number, since it uses less digits than its factorization.

63239420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137509 (or 137507 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 63239420 is about 7952.3216735743. The cubic root of 63239420 is about 398.4091396295.

The spelling of 63239420 in words is "sixty-three million, two hundred thirty-nine thousand, four hundred twenty".