28038942 has 48 divisors (see below), whose sum is σ = 63423360. Its totient is φ = 8942400.

The previous prime is 28038937. The next prime is 28038943. The reversal of 28038942 is 24983082.

It is a junction number, because it is equal to n+sod(n) for n = 28038897 and 28038906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28038943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60592 + ... + 61052.

It is an arithmetic number, because the mean of its divisors is an integer number (1321320).

Almost surely, 2^28038942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28038942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31711680).

28038942 is an abundant number, since it is smaller than the sum of its proper divisors (35384418).

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

28038942 is a wasteful number, since it uses less digits than its factorization.

28038942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609 (or 606 counting only the distinct ones).

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

The square root of 28038942 is about 5295.1810167359. The cubic root of 28038942 is about 303.7996067942.

The spelling of 28038942 in words is "twenty-eight million, thirty-eight thousand, nine hundred forty-two".