28426312 has 32 divisors (see below), whose sum is σ = 56774520. Its totient is φ = 13296640.

The previous prime is 28426309. The next prime is 28426313. The reversal of 28426312 is 21362482.

It can be written as a sum of positive squares in 4 ways, for example, as 27730756 + 695556 = 5266^2 + 834^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28426313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26262 + ... + 27322.

Almost surely, 2^28426312 is an apocalyptic number.

It is an amenable number.

28426312 is a deficient number, since it is larger than the sum of its proper divisors (28348208).

28426312 is a wasteful number, since it uses less digits than its factorization.

28426312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281 (or 1277 counting only the distinct ones).

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

The square root of 28426312 is about 5331.6331456693. The cubic root of 28426312 is about 305.1922535991.

Adding to 28426312 its reverse (21362482), we get a palindrome (49788794).

The spelling of 28426312 in words is "twenty-eight million, four hundred twenty-six thousand, three hundred twelve".