28903394 has 12 divisors (see below), whose sum is σ = 46947186. Its totient is φ = 13339872.

The previous prime is 28903393. The next prime is 28903409. The reversal of 28903394 is 49330982.

It can be written as a sum of positive squares in 3 ways, for example, as 13965169 + 14938225 = 3737^2 + 3865^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28903393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42419 + ... + 43094.

Almost surely, 2^28903394 is an apocalyptic number.

28903394 is a deficient number, since it is larger than the sum of its proper divisors (18043792).

28903394 is a wasteful number, since it uses less digits than its factorization.

28903394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85541 (or 85528 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 28903394 is about 5376.1876827358. The cubic root of 28903394 is about 306.8901487455.

The spelling of 28903394 in words is "twenty-eight million, nine hundred three thousand, three hundred ninety-four".