28119664 has 10 divisors (see below), whose sum is σ = 54481880. Its totient is φ = 14059824.

The previous prime is 28119613. The next prime is 28119671. The reversal of 28119664 is 46691182.

It is a happy number.

It is a congruent number.

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, 878724 + ... + 878755.

It is an arithmetic number, because the mean of its divisors is an integer number (5448188).

Almost surely, 2^28119664 is an apocalyptic number.

It is an amenable number.

28119664 is a deficient number, since it is larger than the sum of its proper divisors (26362216).

28119664 is a wasteful number, since it uses less digits than its factorization.

28119664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1757487 (or 1757481 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 28119664 is about 5302.7977521305. The cubic root of 28119664 is about 304.0908661890.

The spelling of 28119664 in words is "twenty-eight million, one hundred nineteen thousand, six hundred sixty-four".