28020248 has 32 divisors (see below), whose sum is σ = 54359760. Its totient is φ = 13530240.

The previous prime is 28020241. The next prime is 28020253. The reversal of 28020248 is 84202082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28020241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53315 + ... + 53837.

Almost surely, 2^28020248 is an apocalyptic number.

It is an amenable number.

28020248 is a deficient number, since it is larger than the sum of its proper divisors (26339512).

28020248 is a wasteful number, since it uses less digits than its factorization.

28020248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747 (or 743 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 28020248 is about 5293.4155325272. The cubic root of 28020248 is about 303.7320758050.

The spelling of 28020248 in words is "twenty-eight million, twenty thousand, two hundred forty-eight".