28538396 has 24 divisors (see below), whose sum is σ = 51672096. Its totient is φ = 13780800.

The previous prime is 28538381. The next prime is 28538429. The reversal of 28538396 is 69383582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21710 + ... + 22986.

It is an arithmetic number, because the mean of its divisors is an integer number (2153004).

Almost surely, 2^28538396 is an apocalyptic number.

It is an amenable number.

28538396 is a deficient number, since it is larger than the sum of its proper divisors (23133700).

28538396 is a wasteful number, since it uses less digits than its factorization.

28538396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1469 (or 1467 counting only the distinct ones).

The product of its digits is 311040, while the sum is 44.

The square root of 28538396 is about 5342.1340305163. The cubic root of 28538396 is about 305.5928485073.

The spelling of 28538396 in words is "twenty-eight million, five hundred thirty-eight thousand, three hundred ninety-six".