28738838 has 8 divisors (see below), whose sum is σ = 43490088. Its totient is φ = 14242144.

The previous prime is 28738837. The next prime is 28738847. The reversal of 28738838 is 83883782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 28738792 and 28738801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28738837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63356 + ... + 63807.

It is an arithmetic number, because the mean of its divisors is an integer number (5436261).

Almost surely, 2^28738838 is an apocalyptic number.

28738838 is a deficient number, since it is larger than the sum of its proper divisors (14751250).

28738838 is a wasteful number, since it uses less digits than its factorization.

28738838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127278.

The product of its digits is 516096, while the sum is 47.

The square root of 28738838 is about 5360.8616844683. The cubic root of 28738838 is about 306.3066329807.

It can be divided in two parts, 2873 and 8838, that added together give a palindrome (11711).

The spelling of 28738838 in words is "twenty-eight million, seven hundred thirty-eight thousand, eight hundred thirty-eight".