28148384 has 24 divisors (see below), whose sum is σ = 60455808. Its totient is φ = 12794560.

The previous prime is 28148381. The next prime is 28148387. The reversal of 28148384 is 48384182.

It is an interprime number because it is at equal distance from previous prime (28148381) and next prime (28148387).

It is a super-2 number, since 2×28148384² = 1584663043622912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28148381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39632 + ... + 40335.

It is an arithmetic number, because the mean of its divisors is an integer number (2518992).

Almost surely, 2^28148384 is an apocalyptic number.

It is an amenable number.

28148384 is an abundant number, since it is smaller than the sum of its proper divisors (32307424).

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

28148384 is a wasteful number, since it uses less digits than its factorization.

28148384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79988 (or 79980 counting only the distinct ones).

The product of its digits is 49152, while the sum is 38.

The square root of 28148384 is about 5305.5050654956. The cubic root of 28148384 is about 304.1943586306.

The spelling of 28148384 in words is "twenty-eight million, one hundred forty-eight thousand, three hundred eighty-four".