28038276 has 36 divisors (see below), whose sum is σ = 81000192. Its totient is φ = 8010864.

The previous prime is 28038271. The next prime is 28038277. The reversal of 28038276 is 67283082.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×28038276² = 1572289842104352, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 28038276.

It is not an unprimeable number, because it can be changed into a prime (28038271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55380 + ... + 55883.

Almost surely, 2^28038276 is an apocalyptic number.

It is an amenable number.

28038276 is an abundant number, since it is smaller than the sum of its proper divisors (52961916).

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

28038276 is a wasteful number, since it uses less digits than its factorization.

28038276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111280 (or 111275 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 28038276 is about 5295.1181289939. The cubic root of 28038276 is about 303.7972014236.

The spelling of 28038276 in words is "twenty-eight million, thirty-eight thousand, two hundred seventy-six".