28238762 has 4 divisors (see below), whose sum is σ = 42358146. Its totient is φ = 14119380.

The previous prime is 28238741. The next prime is 28238767. The reversal of 28238762 is 26783282.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26783282 = 2 ⋅13391641.

It can be written as a sum of positive squares in only one way, i.e., 28206721 + 32041 = 5311^2 + 179^2 .

It is not an unprimeable number, because it can be changed into a prime (28238767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7059689 + ... + 7059692.

Almost surely, 2^28238762 is an apocalyptic number.

28238762 is a deficient number, since it is larger than the sum of its proper divisors (14119384).

28238762 is a wasteful number, since it uses less digits than its factorization.

28238762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14119383.

The product of its digits is 64512, while the sum is 38.

The square root of 28238762 is about 5314.0156190964. The cubic root of 28238762 is about 304.5195768989.

The spelling of 28238762 in words is "twenty-eight million, two hundred thirty-eight thousand, seven hundred sixty-two".