28377848 has 32 divisors (see below), whose sum is σ = 55157760. Its totient is φ = 13678560.

The previous prime is 28377847. The next prime is 28377851. The reversal of 28377848 is 84877382.

It is a happy number.

It is a super-2 number, since 2×28377848² = 1610604514222208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28377847) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 26165 + ... + 27227.

It is an arithmetic number, because the mean of its divisors is an integer number (1723680).

Almost surely, 2^28377848 is an apocalyptic number.

It is an amenable number.

28377848 is a deficient number, since it is larger than the sum of its proper divisors (26779912).

28377848 is a wasteful number, since it uses less digits than its factorization.

28377848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187 (or 1183 counting only the distinct ones).

The product of its digits is 602112, while the sum is 47.

The square root of 28377848 is about 5327.0862579838. The cubic root of 28377848 is about 305.0187142508.

The spelling of 28377848 in words is "twenty-eight million, three hundred seventy-seven thousand, eight hundred forty-eight".