63923538 has 64 divisors (see below), whose sum is σ = 151200000. Its totient is φ = 18006912.

The previous prime is 63923537. The next prime is 63923539. The reversal of 63923538 is 83532936.

It is an interprime number because it is at equal distance from previous prime (63923537) and next prime (63923539).

It is a junction number, because it is equal to n+sod(n) for n = 63923496 and 63923505.

It is not an unprimeable number, because it can be changed into a prime (63923537) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182988 + ... + 183336.

It is an arithmetic number, because the mean of its divisors is an integer number (2362500).

Almost surely, 2^63923538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63923538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75600000).

63923538 is an abundant number, since it is smaller than the sum of its proper divisors (87276462).

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

63923538 is a wasteful number, since it uses less digits than its factorization.

63923538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464 (or 450 counting only the distinct ones).

The product of its digits is 116640, while the sum is 39.

The square root of 63923538 is about 7995.2196967938. The cubic root of 63923538 is about 399.8406406866.

The spelling of 63923538 in words is "sixty-three million, nine hundred twenty-three thousand, five hundred thirty-eight".