63481530 has 128 divisors (see below), whose sum is σ = 182601216. Its totient is φ = 13824000.

The previous prime is 63481513. The next prime is 63481567. The reversal of 63481530 is 3518436.

It is a super-2 number, since 2×63481530² = 8059809302281800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 628480 + ... + 628580.

It is an arithmetic number, because the mean of its divisors is an integer number (1426572).

Almost surely, 2^63481530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63481530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91300608).

63481530 is an abundant number, since it is smaller than the sum of its proper divisors (119119686).

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

63481530 is a wasteful number, since it uses less digits than its factorization.

63481530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 63481530 is about 7967.5297300983. The cubic root of 63481530 is about 398.9169241805.

Adding to 63481530 its reverse (3518436), we get a palindrome (66999966).

The spelling of 63481530 in words is "sixty-three million, four hundred eighty-one thousand, five hundred thirty".