28074924 has 60 divisors (see below), whose sum is σ = 74461464. Its totient is φ = 9222336.

The previous prime is 28074923. The next prime is 28074947. The reversal of 28074924 is 42947082.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28074923) 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 19 ways as a sum of consecutive naturals, for example, 23059 + ... + 24245.

Almost surely, 2^28074924 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 28074924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37230732).

28074924 is an abundant number, since it is smaller than the sum of its proper divisors (46386540).

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

28074924 is a wasteful number, since it uses less digits than its factorization.

28074924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276 (or 1265 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 28074924 is about 5298.5775449643. The cubic root of 28074924 is about 303.9295052378.

The spelling of 28074924 in words is "twenty-eight million, seventy-four thousand, nine hundred twenty-four".