28961792 has 22 divisors (see below), whose sum is σ = 57897348. Its totient is φ = 14480384.

The previous prime is 28961783. The next prime is 28961809. The reversal of 28961792 is 29716982.

It is a happy 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, 13118 + ... + 15165.

Almost surely, 2^28961792 is an apocalyptic number.

It is an amenable number.

28961792 is a deficient number, since it is larger than the sum of its proper divisors (28935556).

28961792 is an equidigital number, since it uses as much as digits as its factorization.

28961792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28303 (or 28285 counting only the distinct ones).

The product of its digits is 108864, while the sum is 44.

The square root of 28961792 is about 5381.6161141427. The cubic root of 28961792 is about 307.0966955890.

The spelling of 28961792 in words is "twenty-eight million, nine hundred sixty-one thousand, seven hundred ninety-two".