28223408 has 10 divisors (see below), whose sum is σ = 54682884. Its totient is φ = 14111696.

The previous prime is 28223389. The next prime is 28223473. The reversal of 28223408 is 80432282.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 881966 + ... + 881997.

Almost surely, 2^28223408 is an apocalyptic number.

It is an amenable number.

28223408 is a deficient number, since it is larger than the sum of its proper divisors (26459476).

28223408 is a wasteful number, since it uses less digits than its factorization.

28223408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763971 (or 1763965 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 28223408 is about 5312.5707524700. The cubic root of 28223408 is about 304.4643756919.

The spelling of 28223408 in words is "twenty-eight million, two hundred twenty-three thousand, four hundred eight".