28632418 has 8 divisors (see below), whose sum is σ = 43138512. Its totient is φ = 14252916.

The previous prime is 28632407. The next prime is 28632433. The reversal of 28632418 is 81423682.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31080 + ... + 31987.

It is an arithmetic number, because the mean of its divisors is an integer number (5392314).

Almost surely, 2^28632418 is an apocalyptic number.

28632418 is a deficient number, since it is larger than the sum of its proper divisors (14506094).

28632418 is a wasteful number, since it uses less digits than its factorization.

28632418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63296.

The product of its digits is 18432, while the sum is 34.

The square root of 28632418 is about 5350.9268356052. The cubic root of 28632418 is about 305.9280805534.

The spelling of 28632418 in words is "twenty-eight million, six hundred thirty-two thousand, four hundred eighteen".