28903996 has 48 divisors (see below), whose sum is σ = 57183840. Its totient is φ = 12777600.

The previous prime is 28903991. The next prime is 28904009. The reversal of 28903996 is 69930982.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28903991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324720 + ... + 324808.

It is an arithmetic number, because the mean of its divisors is an integer number (1191330).

Almost surely, 2^28903996 is an apocalyptic number.

It is an amenable number.

28903996 is a deficient number, since it is larger than the sum of its proper divisors (28279844).

28903996 is a wasteful number, since it uses less digits than its factorization.

28903996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 28903996 is about 5376.2436700730. The cubic root of 28903996 is about 306.8922793671.

It can be divided in two parts, 2890 and 3996, that added together give a palindrome (6886).

The spelling of 28903996 in words is "twenty-eight million, nine hundred three thousand, nine hundred ninety-six".