28912948 has 6 divisors (see below), whose sum is σ = 50597666. Its totient is φ = 14456472.

The previous prime is 28912883. The next prime is 28912951. The reversal of 28912948 is 84921982.

It can be written as a sum of positive squares in only one way, i.e., 25180324 + 3732624 = 5018^2 + 1932^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3614115 + ... + 3614122.

Almost surely, 2^28912948 is an apocalyptic number.

It is an amenable number.

28912948 is a deficient number, since it is larger than the sum of its proper divisors (21684718).

28912948 is a wasteful number, since it uses less digits than its factorization.

28912948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7228241 (or 7228239 counting only the distinct ones).

The product of its digits is 82944, while the sum is 43.

The square root of 28912948 is about 5377.0761571694. The cubic root of 28912948 is about 306.9239591402.

The spelling of 28912948 in words is "twenty-eight million, nine hundred twelve thousand, nine hundred forty-eight".