28394064 has 120 divisors (see below), whose sum is σ = 84404320. Its totient is φ = 9237888.

The previous prime is 28394053. The next prime is 28394077. The reversal of 28394064 is 46049382.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 260442 + ... + 260550.

Almost surely, 2^28394064 is an apocalyptic number.

28394064 is a gapful number since it is divisible by the number (24) 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 28394064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42202160).

28394064 is an abundant number, since it is smaller than the sum of its proper divisors (56010256).

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

28394064 is a wasteful number, since it uses less digits than its factorization.

28394064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 28394064 is about 5328.6080734090. The cubic root of 28394064 is about 305.0768023017.

It can be divided in two parts, 2839 and 4064, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 28394064 in words is "twenty-eight million, three hundred ninety-four thousand, sixty-four".