634487284 has 12 divisors (see below), whose sum is σ = 1110564000. Its totient is φ = 317183288.

The previous prime is 634487281. The next prime is 634487299. The reversal of 634487284 is 482784436.

It is a super-2 number, since 2×634487284² = 805148227115393312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634487281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15417 + ... + 38815.

It is an arithmetic number, because the mean of its divisors is an integer number (92547000).

Almost surely, 2^634487284 is an apocalyptic number.

It is an amenable number.

634487284 is a deficient number, since it is larger than the sum of its proper divisors (476076716).

634487284 is a wasteful number, since it uses less digits than its factorization.

634487284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30182 (or 30180 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 46.

The square root of 634487284 is about 25189.0310254285. The cubic root of 634487284 is about 859.2924069675.

The spelling of 634487284 in words is "six hundred thirty-four million, four hundred eighty-seven thousand, two hundred eighty-four".