28474000 has 80 divisors (see below), whose sum is σ = 71959680. Its totient is φ = 10876800.

The previous prime is 28473959. The next prime is 28474003. The reversal of 28474000 is 47482.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (28474003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45691 + ... + 46309.

It is an arithmetic number, because the mean of its divisors is an integer number (899496).

Almost surely, 2^28474000 is an apocalyptic number.

28474000 is a gapful number since it is divisible by the number (20) 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 28474000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35979840).

28474000 is an abundant number, since it is smaller than the sum of its proper divisors (43485680).

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

28474000 is a wasteful number, since it uses less digits than its factorization.

28474000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 28474000 is about 5336.1034472731. The cubic root of 28474000 is about 305.3628218290.

The spelling of 28474000 in words is "twenty-eight million, four hundred seventy-four thousand".