28913382 has 32 divisors (see below), whose sum is σ = 65036160. Its totient is φ = 9520200.

The previous prime is 28913351. The next prime is 28913387. The reversal of 28913382 is 28331982.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28913387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1257 + ... + 7707.

It is an arithmetic number, because the mean of its divisors is an integer number (2032380).

Almost surely, 2^28913382 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28913382, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32518080).

28913382 is an abundant number, since it is smaller than the sum of its proper divisors (36122778).

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

28913382 is a wasteful number, since it uses less digits than its factorization.

28913382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6545 (or 6539 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 28913382 is about 5377.1165135228. The cubic root of 28913382 is about 306.9254948343.

The spelling of 28913382 in words is "twenty-eight million, nine hundred thirteen thousand, three hundred eighty-two".