28136958 has 32 divisors (see below), whose sum is σ = 59844096. Its totient is φ = 8799648.

The previous prime is 28136951. The next prime is 28136971. The reversal of 28136958 is 85963182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28136951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5391 + ... + 9237.

It is an arithmetic number, because the mean of its divisors is an integer number (1870128).

Almost surely, 2^28136958 is an apocalyptic number.

28136958 is an abundant number, since it is smaller than the sum of its proper divisors (31707138).

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

28136958 is a wasteful number, since it uses less digits than its factorization.

28136958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3928.

The product of its digits is 103680, while the sum is 42.

The square root of 28136958 is about 5304.4281501402. The cubic root of 28136958 is about 304.1531935068.

The spelling of 28136958 in words is "twenty-eight million, one hundred thirty-six thousand, nine hundred fifty-eight".