63305140 has 24 divisors (see below), whose sum is σ = 133691040. Its totient is φ = 25179168.

The previous prime is 63305101. The next prime is 63305153. The reversal of 63305140 is 4150336.

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, 5262 + ... + 12421.

It is an arithmetic number, because the mean of its divisors is an integer number (5570460).

Almost surely, 2^63305140 is an apocalyptic number.

It is an amenable number.

63305140 is an abundant number, since it is smaller than the sum of its proper divisors (70385900).

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

63305140 is a wasteful number, since it uses less digits than its factorization.

63305140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17871 (or 17869 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 63305140 is about 7956.4527271894. The cubic root of 63305140 is about 398.5471041234.

Adding to 63305140 its reverse (4150336), we get a palindrome (67455476).

The spelling of 63305140 in words is "sixty-three million, three hundred five thousand, one hundred forty".