28707412 has 24 divisors (see below), whose sum is σ = 52706304. Its totient is φ = 13665312.

The previous prime is 28707409. The next prime is 28707433. The reversal of 28707412 is 21470782.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4893 + ... + 9019.

It is an arithmetic number, because the mean of its divisors is an integer number (2196096).

Almost surely, 2^28707412 is an apocalyptic number.

It is an amenable number.

28707412 is a deficient number, since it is larger than the sum of its proper divisors (23998892).

28707412 is a wasteful number, since it uses less digits than its factorization.

28707412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4215 (or 4213 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 28707412 is about 5357.9298241018. The cubic root of 28707412 is about 306.1949432055.

The spelling of 28707412 in words is "twenty-eight million, seven hundred seven thousand, four hundred twelve".