28029436 has 12 divisors (see below), whose sum is σ = 49103712. Its totient is φ = 13999808.

The previous prime is 28029409. The next prime is 28029473. The reversal of 28029436 is 63492082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1236 + ... + 7588.

It is an arithmetic number, because the mean of its divisors is an integer number (4091976).

Almost surely, 2^28029436 is an apocalyptic number.

It is an amenable number.

28029436 is a deficient number, since it is larger than the sum of its proper divisors (21074276).

28029436 is a wasteful number, since it uses less digits than its factorization.

28029436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7460 (or 7458 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 28029436 is about 5294.2833320479. The cubic root of 28029436 is about 303.7652706735.

The spelling of 28029436 in words is "twenty-eight million, twenty-nine thousand, four hundred thirty-six".