28869436 has 24 divisors (see below), whose sum is σ = 53721360. Its totient is φ = 13536000.

The previous prime is 28869433. The next prime is 28869437. The reversal of 28869436 is 63496882.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28869433) 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, 5796 + ... + 9556.

It is an arithmetic number, because the mean of its divisors is an integer number (2238390).

Almost surely, 2^28869436 is an apocalyptic number.

It is an amenable number.

28869436 is a deficient number, since it is larger than the sum of its proper divisors (24851924).

28869436 is a wasteful number, since it uses less digits than its factorization.

28869436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3885 (or 3883 counting only the distinct ones).

The product of its digits is 497664, while the sum is 46.

The square root of 28869436 is about 5373.0285686938. The cubic root of 28869436 is about 306.7699153498.

The spelling of 28869436 in words is "twenty-eight million, eight hundred sixty-nine thousand, four hundred thirty-six".