28488418 has 8 divisors (see below), whose sum is σ = 48837312. Its totient is φ = 12209316.

The previous prime is 28488389. The next prime is 28488419. The reversal of 28488418 is 81488482.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (28488419) by changing a digit.

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, 1017430 + ... + 1017457.

It is an arithmetic number, because the mean of its divisors is an integer number (6104664).

Almost surely, 2^28488418 is an apocalyptic number.

28488418 is a deficient number, since it is larger than the sum of its proper divisors (20348894).

28488418 is a wasteful number, since it uses less digits than its factorization.

28488418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2034896.

The product of its digits is 131072, while the sum is 43.

The square root of 28488418 is about 5337.4542620991. The cubic root of 28488418 is about 305.4143539666.

The spelling of 28488418 in words is "twenty-eight million, four hundred eighty-eight thousand, four hundred eighteen".