28363776 has 88 divisors (see below), whose sum is σ = 86465280. Its totient is φ = 8097792.

The previous prime is 28363763. The next prime is 28363813. The reversal of 28363776 is 67736382.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20845 + ... + 22163.

It is an arithmetic number, because the mean of its divisors is an integer number (982560).

Almost surely, 2^28363776 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 28363776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43232640).

28363776 is an abundant number, since it is smaller than the sum of its proper divisors (58101504).

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

28363776 is a wasteful number, since it uses less digits than its factorization.

28363776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349 (or 1331 counting only the distinct ones).

The product of its digits is 254016, while the sum is 42.

The square root of 28363776 is about 5325.7652971193. The cubic root of 28363776 is about 304.9682883808.

The spelling of 28363776 in words is "twenty-eight million, three hundred sixty-three thousand, seven hundred seventy-six".