28353776 has 80 divisors (see below), whose sum is σ = 64579200. Its totient is φ = 11923200.

The previous prime is 28353751. The next prime is 28353817. The reversal of 28353776 is 67735382.

28353776 = T₁₃₉ + T₁₄₀ + ... + T₅₅₆.

It is a super-2 number, since 2×28353776² = 1607873226916352, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203915 + ... + 204053.

It is an arithmetic number, because the mean of its divisors is an integer number (807240).

Almost surely, 2^28353776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28353776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32289600).

28353776 is an abundant number, since it is smaller than the sum of its proper divisors (36225424).

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

28353776 is a wasteful number, since it uses less digits than its factorization.

28353776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 232 counting only the distinct ones).

The product of its digits is 211680, while the sum is 41.

The square root of 28353776 is about 5324.8263821462. The cubic root of 28353776 is about 304.9324440542.

The spelling of 28353776 in words is "twenty-eight million, three hundred fifty-three thousand, seven hundred seventy-six".