28488442 has 16 divisors (see below), whose sum is σ = 44352000. Its totient is φ = 13709520.

The previous prime is 28488437. The next prime is 28488457. The reversal of 28488442 is 24488482.

It is a junction number, because it is equal to n+sod(n) for n = 28488395 and 28488404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11184 + ... + 13492.

It is an arithmetic number, because the mean of its divisors is an integer number (2772000).

Almost surely, 2^28488442 is an apocalyptic number.

28488442 is a deficient number, since it is larger than the sum of its proper divisors (15863558).

28488442 is a wasteful number, since it uses less digits than its factorization.

28488442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2541.

The product of its digits is 131072, while the sum is 40.

The square root of 28488442 is about 5337.4565103615. The cubic root of 28488442 is about 305.4144397318.

Adding to 28488442 its sum of digits (40), we get a palindrome (28488482).

The spelling of 28488442 in words is "twenty-eight million, four hundred eighty-eight thousand, four hundred forty-two".