28774000 has 40 divisors (see below), whose sum is σ = 69580368. Its totient is φ = 11508800.

The previous prime is 28773971. The next prime is 28774001. The reversal of 28774000 is 47782.

It is a tau number, because it is divible by the number of its divisors (40).

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 28774000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28774001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5194 + ... + 9193.

Almost surely, 2^28774000 is an apocalyptic number.

28774000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28774000 is an abundant number, since it is smaller than the sum of its proper divisors (40806368).

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

28774000 is a wasteful number, since it uses less digits than its factorization.

28774000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14410 (or 14394 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 28774000 is about 5364.1401920531. The cubic root of 28774000 is about 306.4315042356.

The spelling of 28774000 in words is "twenty-eight million, seven hundred seventy-four thousand".