28747948 has 6 divisors (see below), whose sum is σ = 50308916. Its totient is φ = 14373972.

The previous prime is 28747921. The next prime is 28747949. The reversal of 28747948 is 84974782.

It is not an unprimeable number, because it can be changed into a prime (28747949) by changing a digit.

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, 3593490 + ... + 3593497.

Almost surely, 2^28747948 is an apocalyptic number.

It is an amenable number.

28747948 is a deficient number, since it is larger than the sum of its proper divisors (21560968).

28747948 is a wasteful number, since it uses less digits than its factorization.

28747948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7186991 (or 7186989 counting only the distinct ones).

The product of its digits is 903168, while the sum is 49.

The square root of 28747948 is about 5361.7112939807. The cubic root of 28747948 is about 306.3389952103.

The spelling of 28747948 in words is "twenty-eight million, seven hundred forty-seven thousand, nine hundred forty-eight".