63273728 has 144 divisors (see below), whose sum is σ = 160118784. Its totient is φ = 24330240.

The previous prime is 63273673. The next prime is 63273761. The reversal of 63273728 is 82737236.

It is a junction number, because it is equal to n+sod(n) for n = 63273691 and 63273700.

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, 944351 + ... + 944417.

It is an arithmetic number, because the mean of its divisors is an integer number (1111936).

Almost surely, 2^63273728 is an apocalyptic number.

63273728 is a gapful number since it is divisible by the number (68) 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 63273728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80059392).

63273728 is an abundant number, since it is smaller than the sum of its proper divisors (96845056).

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

63273728 is a wasteful number, since it uses less digits than its factorization.

63273728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 124 counting only the distinct ones).

The product of its digits is 84672, while the sum is 38.

The square root of 63273728 is about 7954.4784869908. The cubic root of 63273728 is about 398.4811735482.

The spelling of 63273728 in words is "sixty-three million, two hundred seventy-three thousand, seven hundred twenty-eight".