28571412 has 12 divisors (see below), whose sum is σ = 66666656. Its totient is φ = 9523800.

The previous prime is 28571401. The next prime is 28571423. The reversal of 28571412 is 21417582.

It is an interprime number because it is at equal distance from previous prime (28571401) and next prime (28571423).

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 28571412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1190464 + ... + 1190487.

Almost surely, 2^28571412 is an apocalyptic number.

It is an amenable number.

28571412 is an abundant number, since it is smaller than the sum of its proper divisors (38095244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28571412 is a wasteful number, since it uses less digits than its factorization.

28571412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380958 (or 2380956 counting only the distinct ones).

The product of its digits is 4480, while the sum is 30.

The square root of 28571412 is about 5345.2232881331. The cubic root of 28571412 is about 305.7106496288.

Adding to 28571412 its reverse (21417582), we get a palindrome (49988994).

The spelling of 28571412 in words is "twenty-eight million, five hundred seventy-one thousand, four hundred twelve".