28607944 has 8 divisors (see below), whose sum is σ = 53639910. Its totient is φ = 14303968.

The previous prime is 28607933. The next prime is 28607983. The reversal of 28607944 is 44970682.

It can be written as a sum of positive squares in only one way, i.e., 15920100 + 12687844 = 3990^2 + 3562^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 28607897 and 28607906.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1787989 + ... + 1788004.

Almost surely, 2^28607944 is an apocalyptic number.

It is an amenable number.

28607944 is a deficient number, since it is larger than the sum of its proper divisors (25031966).

28607944 is a wasteful number, since it uses less digits than its factorization.

28607944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3575999 (or 3575995 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 28607944 is about 5348.6394531694. The cubic root of 28607944 is about 305.8408901277.

The spelling of 28607944 in words is "twenty-eight million, six hundred seven thousand, nine hundred forty-four".