28390376 has 32 divisors (see below), whose sum is σ = 61841280. Its totient is φ = 11966400.

The previous prime is 28390361. The next prime is 28390403. The reversal of 28390376 is 67309382.

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 in 7 ways as a sum of consecutive naturals, for example, 740 + ... + 7571.

It is an arithmetic number, because the mean of its divisors is an integer number (1932540).

Almost surely, 2^28390376 is an apocalyptic number.

It is an amenable number.

28390376 is an abundant number, since it is smaller than the sum of its proper divisors (33450904).

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

28390376 is a wasteful number, since it uses less digits than its factorization.

28390376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8385 (or 8381 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 28390376 is about 5328.2620055699. The cubic root of 28390376 is about 305.0635932971.

The spelling of 28390376 in words is "twenty-eight million, three hundred ninety thousand, three hundred seventy-six".