634112920 has 96 divisors (see below), whose sum is σ = 1757414880. Its totient is φ = 204610560.

The previous prime is 634112917. The next prime is 634112951. The reversal of 634112920 is 29211436.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23805 + ... + 42835.

It is an arithmetic number, because the mean of its divisors is an integer number (18306405).

Almost surely, 2^634112920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634112920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (878707440).

634112920 is an abundant number, since it is smaller than the sum of its proper divisors (1123301960).

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

634112920 is a wasteful number, since it uses less digits than its factorization.

634112920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19073 (or 19062 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 634112920 is about 25181.5988372462. The cubic root of 634112920 is about 859.1233720950.

The spelling of 634112920 in words is "six hundred thirty-four million, one hundred twelve thousand, nine hundred twenty".