838243040 has 96 divisors (see below), whose sum is σ = 2029116096. Its totient is φ = 327147520.

The previous prime is 838243019. The next prime is 838243061. The reversal of 838243040 is 40342838.

838243040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (838243019) and next prime (838243061).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 838242988 and 838243006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1283354 + ... + 1284006.

It is an arithmetic number, because the mean of its divisors is an integer number (21136626).

Almost surely, 2^838243040 is an apocalyptic number.

838243040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 838243040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1014558048).

838243040 is an abundant number, since it is smaller than the sum of its proper divisors (1190873056).

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

838243040 is a wasteful number, since it uses less digits than its factorization.

838243040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852 (or 844 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 838243040 is about 28952.4271866799. The cubic root of 838243040 is about 942.8804956392.

Adding to 838243040 its reverse (40342838), we get a palindrome (878585878).

The spelling of 838243040 in words is "eight hundred thirty-eight million, two hundred forty-three thousand, forty".