634463280 has 560 divisors, whose sum is σ = 2576192256. Its totient is φ = 143700480.

The previous prime is 634463251. The next prime is 634463287. The reversal of 634463280 is 82364436.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634463287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 14754939 + ... + 14754981.

Almost surely, 2^634463280 is an apocalyptic number.

634463280 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 634463280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1288096128).

634463280 is an abundant number, since it is smaller than the sum of its proper divisors (1941728976).

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

634463280 is a wasteful number, since it uses less digits than its factorization.

634463280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 634463280 is about 25188.5545436811. The cubic root of 634463280 is about 859.2815705459.

The spelling of 634463280 in words is "six hundred thirty-four million, four hundred sixty-three thousand, two hundred eighty".