28682238 has 16 divisors (see below), whose sum is σ = 61777296. Its totient is φ = 8825280.

The previous prime is 28682237. The next prime is 28682239. The reversal of 28682238 is 83228682.

It is an interprime number because it is at equal distance from previous prime (28682237) and next prime (28682239).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 28682196 and 28682205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28682237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183783 + ... + 183938.

It is an arithmetic number, because the mean of its divisors is an integer number (3861081).

Almost surely, 2^28682238 is an apocalyptic number.

28682238 is an abundant number, since it is smaller than the sum of its proper divisors (33095058).

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

28682238 is a wasteful number, since it uses less digits than its factorization.

28682238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367739.

The product of its digits is 73728, while the sum is 39.

The square root of 28682238 is about 5355.5800806262. The cubic root of 28682238 is about 306.1054145763.

It can be divided in two parts, 28682 and 238, that added together give a triangular number (28920 = T₂₄₀).

The spelling of 28682238 in words is "twenty-eight million, six hundred eighty-two thousand, two hundred thirty-eight".