28347048 has 24 divisors (see below), whose sum is σ = 76773450. Its totient is φ = 9448992.

The previous prime is 28347047. The next prime is 28347083. The reversal of 28347048 is 84074382.

It can be written as a sum of positive squares in only one way, i.e., 20629764 + 7717284 = 4542^2 + 2778^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28347043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 196783 + ... + 196926.

Almost surely, 2^28347048 is an apocalyptic number.

It is an amenable number.

28347048 is an abundant number, since it is smaller than the sum of its proper divisors (48426402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28347048 is a wasteful number, since it uses less digits than its factorization.

28347048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393721 (or 393714 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 28347048 is about 5324.1945869775. The cubic root of 28347048 is about 304.9083232484.

The spelling of 28347048 in words is "twenty-eight million, three hundred forty-seven thousand, forty-eight".