28047467 has 16 divisors (see below), whose sum is σ = 35039232. Its totient is φ = 21893760.

The previous prime is 28047463. The next prime is 28047469. The reversal of 28047467 is 76474082.

It is not a de Polignac number, because 28047467 - 2² = 28047463 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28047467.

It is not an unprimeable number, because it can be changed into a prime (28047463) 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, 113 + ... + 7490.

It is an arithmetic number, because the mean of its divisors is an integer number (2189952).

Almost surely, 2^28047467 is an apocalyptic number.

28047467 is a deficient number, since it is larger than the sum of its proper divisors (6991765).

28047467 is a wasteful number, since it uses less digits than its factorization.

28047467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7658.

The product of its (nonzero) digits is 75264, while the sum is 38.

The square root of 28047467 is about 5295.9859327608. The cubic root of 28047467 is about 303.8303928965.

The spelling of 28047467 in words is "twenty-eight million, forty-seven thousand, four hundred sixty-seven".