28573047 has 16 divisors (see below), whose sum is σ = 42420960. Its totient is φ = 19008000.

The previous prime is 28573043. The next prime is 28573049. The reversal of 28573047 is 74037582.

It is not a de Polignac number, because 28573047 - 2² = 28573043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28573043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17047 + ... + 18647.

It is an arithmetic number, because the mean of its divisors is an integer number (2651310).

Almost surely, 2^28573047 is an apocalyptic number.

28573047 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

28573047 is a deficient number, since it is larger than the sum of its proper divisors (13847913).

28573047 is a wasteful number, since it uses less digits than its factorization.

28573047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2271 (or 2265 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 28573047 is about 5345.3762262352. The cubic root of 28573047 is about 305.7164809516.

The spelling of 28573047 in words is "twenty-eight million, five hundred seventy-three thousand, forty-seven".