28924038 has 96 divisors (see below), whose sum is σ = 78073632. Its totient is φ = 7603200.

The previous prime is 28924003. The next prime is 28924039. The reversal of 28924038 is 83042982.

It is a junction number, because it is equal to n+sod(n) for n = 28923993 and 28924011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28924039) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43428 + ... + 44088.

It is an arithmetic number, because the mean of its divisors is an integer number (813267).

Almost surely, 2^28924038 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28924038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39036816).

28924038 is an abundant number, since it is smaller than the sum of its proper divisors (49149594).

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

28924038 is a wasteful number, since it uses less digits than its factorization.

28924038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710 (or 707 counting only the distinct ones).

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

The square root of 28924038 is about 5378.1072878848. The cubic root of 28924038 is about 306.9631959049.

The spelling of 28924038 in words is "twenty-eight million, nine hundred twenty-four thousand, thirty-eight".