838207872 has 128 divisors (see below), whose sum is σ = 2484108000. Its totient is φ = 278249472.

The previous prime is 838207861. The next prime is 838207873. The reversal of 838207872 is 278702838.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838207873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1413208 + ... + 1413800.

Almost surely, 2^838207872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 838207872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1242054000).

838207872 is an abundant number, since it is smaller than the sum of its proper divisors (1645900128).

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

838207872 is a wasteful number, since it uses less digits than its factorization.

838207872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025 (or 1007 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 838207872 is about 28951.8198391742. The cubic root of 838207872 is about 942.8673094535.

The spelling of 838207872 in words is "eight hundred thirty-eight million, two hundred seven thousand, eight hundred seventy-two".