28646386 has 16 divisors (see below), whose sum is σ = 43814304. Its totient is φ = 14043744.

The previous prime is 28646383. The next prime is 28646389. The reversal of 28646386 is 68364682.

It is an interprime number because it is at equal distance from previous prime (28646383) and next prime (28646389).

It is not an unprimeable number, because it can be changed into a prime (28646381) 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, 41601 + ... + 42283.

It is an arithmetic number, because the mean of its divisors is an integer number (2738394).

Almost surely, 2^28646386 is an apocalyptic number.

28646386 is a deficient number, since it is larger than the sum of its proper divisors (15167918).

28646386 is a wasteful number, since it uses less digits than its factorization.

28646386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065.

The product of its digits is 331776, while the sum is 43.

The square root of 28646386 is about 5352.2318709114. The cubic root of 28646386 is about 305.9778203127.

The spelling of 28646386 in words is "twenty-eight million, six hundred forty-six thousand, three hundred eighty-six".