28794420 has 48 divisors (see below), whose sum is σ = 89584320. Its totient is φ = 7678368.

The previous prime is 28794397. The next prime is 28794431. The reversal of 28794420 is 2449782.

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

It is a congruent number.

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, 26122 + ... + 27201.

It is an arithmetic number, because the mean of its divisors is an integer number (1866340).

Almost surely, 2^28794420 is an apocalyptic number.

28794420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28794420 is an abundant number, since it is smaller than the sum of its proper divisors (60789900).

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

28794420 is a wasteful number, since it uses less digits than its factorization.

28794420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53341 (or 53333 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 28794420 is about 5366.0432350103. The cubic root of 28794420 is about 306.5039753518.

The spelling of 28794420 in words is "twenty-eight million, seven hundred ninety-four thousand, four hundred twenty".