28329416 has 8 divisors (see below), whose sum is σ = 53117670. Its totient is φ = 14164704.

The previous prime is 28329397. The next prime is 28329419. The reversal of 28329416 is 61492382.

It can be written as a sum of positive squares in only one way, i.e., 27772900 + 556516 = 5270^2 + 746^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (28329419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1770581 + ... + 1770596.

Almost surely, 2^28329416 is an apocalyptic number.

It is an amenable number.

28329416 is a deficient number, since it is larger than the sum of its proper divisors (24788254).

28329416 is a wasteful number, since it uses less digits than its factorization.

28329416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3541183 (or 3541179 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 28329416 is about 5322.5384921107. The cubic root of 28329416 is about 304.8450919893.

The spelling of 28329416 in words is "twenty-eight million, three hundred twenty-nine thousand, four hundred sixteen".