28000412 has 24 divisors (see below), whose sum is σ = 54214272. Its totient is φ = 12546800.

The previous prime is 28000393. The next prime is 28000421. The reversal of 28000412 is 21400082.

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, 1358 + ... + 7605.

It is an arithmetic number, because the mean of its divisors is an integer number (2258928).

Almost surely, 2^28000412 is an apocalyptic number.

28000412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28000412 is a deficient number, since it is larger than the sum of its proper divisors (26213860).

28000412 is a wasteful number, since it uses less digits than its factorization.

28000412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9049 (or 9047 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 28000412 is about 5291.5415523267. The cubic root of 28000412 is about 303.6603865549.

Adding to 28000412 its reverse (21400082), we get a palindrome (49400494).

The spelling of 28000412 in words is "twenty-eight million, four hundred twelve", and thus it is an aban number.