636428094 has 8 divisors (see below), whose sum is σ = 1272856200. Its totient is φ = 212142696.

The previous prime is 636428059. The next prime is 636428119. The reversal of 636428094 is 490824636.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

636428094 is an admirable number.

It is a super-3 number, since 3×636428094³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53035669 + ... + 53035680.

It is an arithmetic number, because the mean of its divisors is an integer number (159107025).

Almost surely, 2^636428094 is an apocalyptic number.

636428094 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

636428094 is a wasteful number, since it uses less digits than its factorization.

636428094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106071354.

The product of its (nonzero) digits is 248832, while the sum is 42.

The square root of 636428094 is about 25227.5265137112. The cubic root of 636428094 is about 860.1676678678.

The spelling of 636428094 in words is "six hundred thirty-six million, four hundred twenty-eight thousand, ninety-four".