28035920 has 40 divisors (see below), whose sum is σ = 71111520. Its totient is φ = 10194560.

The previous prime is 28035913. The next prime is 28035929. The reversal of 28035920 is 2953082.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28035929) 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 7 ways as a sum of consecutive naturals, for example, 15050 + ... + 16809.

It is an arithmetic number, because the mean of its divisors is an integer number (1777788).

Almost surely, 2^28035920 is an apocalyptic number.

28035920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28035920 is an abundant number, since it is smaller than the sum of its proper divisors (43075600).

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

28035920 is a wasteful number, since it uses less digits than its factorization.

28035920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31883 (or 31877 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 28035920 is about 5294.8956552514. The cubic root of 28035920 is about 303.7886920290.

The spelling of 28035920 in words is "twenty-eight million, thirty-five thousand, nine hundred twenty".