28940382 has 64 divisors (see below), whose sum is σ = 68870400. Its totient is φ = 8981280.

The previous prime is 28940369. The next prime is 28940393. The reversal of 28940382 is 28304982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68532 + ... + 68952.

It is an arithmetic number, because the mean of its divisors is an integer number (1076100).

Almost surely, 2^28940382 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28940382, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34435200).

28940382 is an abundant number, since it is smaller than the sum of its proper divisors (39930018).

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

28940382 is a wasteful number, since it uses less digits than its factorization.

28940382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518 (or 512 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 28940382 is about 5379.6265669654. The cubic root of 28940382 is about 307.0210032068.

The spelling of 28940382 in words is "twenty-eight million, nine hundred forty thousand, three hundred eighty-two".