906781338 has 96 divisors (see below), whose sum is σ = 2142241920. Its totient is φ = 284135040.

The previous prime is 906781321. The next prime is 906781339. The reversal of 906781338 is 833187609.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 906781293 and 906781302.

It is not an unprimeable number, because it can be changed into a prime (906781339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1861731 + ... + 1862217.

It is an arithmetic number, because the mean of its divisors is an integer number (22315020).

Almost surely, 2^906781338 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 906781338, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1071120960).

906781338 is an abundant number, since it is smaller than the sum of its proper divisors (1235460582).

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

906781338 is a wasteful number, since it uses less digits than its factorization.

906781338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597 (or 562 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 906781338 is about 30112.8101976551. The cubic root of 906781338 is about 967.9082490787.

The spelling of 906781338 in words is "nine hundred six million, seven hundred eighty-one thousand, three hundred thirty-eight".