63723240 has 128 divisors (see below), whose sum is σ = 242784000. Its totient is φ = 14563584.

The previous prime is 63723239. The next prime is 63723251. The reversal of 63723240 is 4232736.

63723240 is a `hidden beast` number, since 637 + 2 + 3 + 24 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3346 + ... + 11774.

It is an arithmetic number, because the mean of its divisors is an integer number (1896750).

Almost surely, 2^63723240 is an apocalyptic number.

63723240 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 63723240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121392000).

63723240 is an abundant number, since it is smaller than the sum of its proper divisors (179060760).

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

63723240 is a wasteful number, since it uses less digits than its factorization.

63723240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8456 (or 8446 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 27.

The square root of 63723240 is about 7982.6837592379. The cubic root of 63723240 is about 399.4225835433.

Adding to 63723240 its reverse (4232736), we get a palindrome (67955976).

The spelling of 63723240 in words is "sixty-three million, seven hundred twenty-three thousand, two hundred forty".