28793408 has 28 divisors (see below), whose sum is σ = 65300352. Its totient is φ = 12339840.

The previous prime is 28793381. The next prime is 28793419. The reversal of 28793408 is 80439782.

It is a tau number, because it is divible by the number of its divisors (28).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31688 + ... + 32583.

Almost surely, 2^28793408 is an apocalyptic number.

28793408 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28793408 is an abundant number, since it is smaller than the sum of its proper divisors (36506944).

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

28793408 is an equidigital number, since it uses as much as digits as its factorization.

28793408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64290 (or 64280 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 28793408 is about 5365.9489375133. The cubic root of 28793408 is about 306.5003845443.

The spelling of 28793408 in words is "twenty-eight million, seven hundred ninety-three thousand, four hundred eight".