28329080 has 64 divisors (see below), whose sum is σ = 69279840. Its totient is φ = 10363392.

The previous prime is 28329079. The next prime is 28329127. The reversal of 28329080 is 8092382.

28329080 = T₁₉₃₆ + T₁₉₃₇ + ... + T₁₉₅₀.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81467 + ... + 81813.

Almost surely, 2^28329080 is an apocalyptic number.

28329080 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 28329080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34639920).

28329080 is an abundant number, since it is smaller than the sum of its proper divisors (40950760).

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

28329080 is a wasteful number, since it uses less digits than its factorization.

28329080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 28329080 is about 5322.5069281308. The cubic root of 28329080 is about 304.8438867832.

The spelling of 28329080 in words is "twenty-eight million, three hundred twenty-nine thousand, eighty".