634428916 has 96 divisors (see below), whose sum is σ = 1332059904. Its totient is φ = 261120000.

The previous prime is 634428913. The next prime is 634428929. The reversal of 634428916 is 619824436.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634428913) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4201441 + ... + 4201591.

It is an arithmetic number, because the mean of its divisors is an integer number (13875624).

Almost surely, 2^634428916 is an apocalyptic number.

It is an amenable number.

634428916 is an abundant number, since it is smaller than the sum of its proper divisors (697630988).

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

634428916 is a wasteful number, since it uses less digits than its factorization.

634428916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 359 counting only the distinct ones).

The product of its digits is 248832, while the sum is 43.

The square root of 634428916 is about 25187.8723992321. The cubic root of 634428916 is about 859.2660567062.

The spelling of 634428916 in words is "six hundred thirty-four million, four hundred twenty-eight thousand, nine hundred sixteen".