28774368 has 108 divisors (see below), whose sum is σ = 95233320. Its totient is φ = 8217216.

The previous prime is 28774363. The next prime is 28774373. The reversal of 28774368 is 86347782.

It is a happy number.

28774368 is a `hidden beast` number, since 287 + 7 + 4 + 368 = 666.

It is an interprime number because it is at equal distance from previous prime (28774363) and next prime (28774373).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28774363) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 13093 + ... + 15131.

It is an arithmetic number, because the mean of its divisors is an integer number (881790).

Almost surely, 2^28774368 is an apocalyptic number.

28774368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28774368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47616660).

28774368 is an abundant number, since it is smaller than the sum of its proper divisors (66458952).

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

28774368 is a wasteful number, since it uses less digits than its factorization.

28774368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069 (or 2051 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 28774368 is about 5364.1744938061. The cubic root of 28774368 is about 306.4328105806.

The spelling of 28774368 in words is "twenty-eight million, seven hundred seventy-four thousand, three hundred sixty-eight".