28002412 has 12 divisors (see below), whose sum is σ = 50047200. Its totient is φ = 13703216.

The previous prime is 28002407. The next prime is 28002413. The reversal of 28002412 is 21420082.

It is a self number, because there is not a number n which added to its sum of digits gives 28002412.

It is not an unprimeable number, because it can be changed into a prime (28002413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74287 + ... + 74662.

It is an arithmetic number, because the mean of its divisors is an integer number (4170600).

Almost surely, 2^28002412 is an apocalyptic number.

It is an amenable number.

28002412 is a deficient number, since it is larger than the sum of its proper divisors (22044788).

28002412 is a wasteful number, since it uses less digits than its factorization.

28002412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149000 (or 148998 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 28002412 is about 5291.7305297984. The cubic root of 28002412 is about 303.6676162855.

Adding to 28002412 its reverse (21420082), we get a palindrome (49422494).

The spelling of 28002412 in words is "twenty-eight million, two thousand, four hundred twelve".