28594136 has 32 divisors (see below), whose sum is σ = 57853440. Its totient is φ = 13198848.

The previous prime is 28594133. The next prime is 28594141. The reversal of 28594136 is 63149582.

It is a happy number.

It is a super-2 number, since 2×28594136² = 1635249227172992, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28594136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28594133) 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, 5225 + ... + 9191.

It is an arithmetic number, because the mean of its divisors is an integer number (1807920).

Almost surely, 2^28594136 is an apocalyptic number.

It is an amenable number.

28594136 is an abundant number, since it is smaller than the sum of its proper divisors (29259304).

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

28594136 is a wasteful number, since it uses less digits than its factorization.

28594136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4043 (or 4039 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 28594136 is about 5347.3485018278. The cubic root of 28594136 is about 305.7916761677.

It can be divided in two parts, 28594 and 136, that multiplied together give a square (3888784 = 1972²).

The spelling of 28594136 in words is "twenty-eight million, five hundred ninety-four thousand, one hundred thirty-six".