28336386 has 32 divisors (see below), whose sum is σ = 61246080. Its totient is φ = 8688384.

The previous prime is 28336379. The next prime is 28336411. The reversal of 28336386 is 68363382.

28336386 = T₁₂₃ + T₁₂₄ + ... + T₅₅₅.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33355 + ... + 34193.

It is an arithmetic number, because the mean of its divisors is an integer number (1913940).

Almost surely, 2^28336386 is an apocalyptic number.

28336386 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28336386 is an abundant number, since it is smaller than the sum of its proper divisors (32909694).

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

28336386 is a wasteful number, since it uses less digits than its factorization.

28336386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290.

The product of its digits is 124416, while the sum is 39.

The square root of 28336386 is about 5323.1932146034. The cubic root of 28336386 is about 304.8700906934.

The spelling of 28336386 in words is "twenty-eight million, three hundred thirty-six thousand, three hundred eighty-six".