28264338 has 12 divisors (see below), whose sum is σ = 61239438. Its totient is φ = 9421440.

The previous prime is 28264307. The next prime is 28264349. The reversal of 28264338 is 83346282.

28264338 is a `hidden beast` number, since 2 + 8 + 2 + 643 + 3 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 25431849 + 2832489 = 5043^2 + 1683^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 785103 + ... + 785138.

Almost surely, 2^28264338 is an apocalyptic number.

28264338 is an abundant number, since it is smaller than the sum of its proper divisors (32975100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28264338 is a wasteful number, since it uses less digits than its factorization.

28264338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570249 (or 1570246 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 28264338 is about 5316.4215408487. The cubic root of 28264338 is about 304.6114841687.

It can be divided in two parts, 282 and 64338, that added together give a triangular number (64620 = T₃₅₉).

The spelling of 28264338 in words is "twenty-eight million, two hundred sixty-four thousand, three hundred thirty-eight".