28841436 has 36 divisors (see below), whose sum is σ = 78514072. Its totient is φ = 8874144.

The previous prime is 28841387. The next prime is 28841437. The reversal of 28841436 is 63414882.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 28841436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28841437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30346 + ... + 31281.

Almost surely, 2^28841436 is an apocalyptic number.

28841436 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28841436 is an abundant number, since it is smaller than the sum of its proper divisors (49672636).

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

28841436 is a wasteful number, since it uses less digits than its factorization.

28841436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61650 (or 61645 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 28841436 is about 5370.4223297614. The cubic root of 28841436 is about 306.6707062060.

The spelling of 28841436 in words is "twenty-eight million, eight hundred forty-one thousand, four hundred thirty-six".