28412643 has 16 divisors (see below), whose sum is σ = 43819776. Its totient is φ = 16039200.

The previous prime is 28412639. The next prime is 28412669. The reversal of 28412643 is 34621482.

It is not a de Polignac number, because 28412643 - 2² = 28412639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28412643.

It is not an unprimeable number, because it can be changed into a prime (28412603) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 6408 + ... + 9893.

It is an arithmetic number, because the mean of its divisors is an integer number (2738736).

Almost surely, 2^28412643 is an apocalyptic number.

28412643 is a deficient number, since it is larger than the sum of its proper divisors (15407133).

28412643 is a wasteful number, since it uses less digits than its factorization.

28412643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16394.

The product of its digits is 9216, while the sum is 30.

The square root of 28412643 is about 5330.3511141387. The cubic root of 28412643 is about 305.1433277805.

The spelling of 28412643 in words is "twenty-eight million, four hundred twelve thousand, six hundred forty-three".