28571672 has 8 divisors (see below), whose sum is σ = 53571900. Its totient is φ = 14285832.

The previous prime is 28571663. The next prime is 28571771. The reversal of 28571672 is 27617582.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1785722 + ... + 1785737.

Almost surely, 2^28571672 is an apocalyptic number.

It is an amenable number.

28571672 is a deficient number, since it is larger than the sum of its proper divisors (25000228).

28571672 is a wasteful number, since it uses less digits than its factorization.

28571672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3571465 (or 3571461 counting only the distinct ones).

The product of its digits is 47040, while the sum is 38.

The square root of 28571672 is about 5345.2476088578. The cubic root of 28571672 is about 305.7115769488.

The spelling of 28571672 in words is "twenty-eight million, five hundred seventy-one thousand, six hundred seventy-two".