28904463 has 18 divisors (see below), whose sum is σ = 48568104. Its totient is φ = 16516584.

The previous prime is 28904443. The next prime is 28904521. The reversal of 28904463 is 36440982.

It is a happy number.

It is not a de Polignac number, because 28904463 - 2⁸ = 28904207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28904413) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 32331 + ... + 33212.

It is an arithmetic number, because the mean of its divisors is an integer number (2698228).

Almost surely, 2^28904463 is an apocalyptic number.

28904463 is a deficient number, since it is larger than the sum of its proper divisors (19663641).

28904463 is a wasteful number, since it uses less digits than its factorization.

28904463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65563 (or 65553 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 28904463 is about 5376.2871017088. The cubic root of 28904463 is about 306.8939321711.

The spelling of 28904463 in words is "twenty-eight million, nine hundred four thousand, four hundred sixty-three".