28623412 has 12 divisors (see below), whose sum is σ = 51312996. Its totient is φ = 13962560.

The previous prime is 28623403. The next prime is 28623421. The reversal of 28623412 is 21432682.

It is an interprime number because it is at equal distance from previous prime (28623403) and next prime (28623421).

It can be written as a sum of positive squares in 2 ways, for example, as 8785296 + 19838116 = 2964^2 + 4454^2 .

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 3 ways as a sum of consecutive naturals, for example, 87103 + ... + 87430.

It is an arithmetic number, because the mean of its divisors is an integer number (4276083).

Almost surely, 2^28623412 is an apocalyptic number.

It is an amenable number.

28623412 is a deficient number, since it is larger than the sum of its proper divisors (22689584).

28623412 is a wasteful number, since it uses less digits than its factorization.

28623412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174578 (or 174576 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 28623412 is about 5350.0852329659. The cubic root of 28623412 is about 305.8960017955.

The spelling of 28623412 in words is "twenty-eight million, six hundred twenty-three thousand, four hundred twelve".