838493136 has 120 divisors (see below), whose sum is σ = 2537094560. Its totient is φ = 256981248.

The previous prime is 838493107. The next prime is 838493137. The reversal of 838493136 is 631394838.

It is a super-2 number, since 2×838493136² = 1406141478238228992, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 838493091 and 838493100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838493137) 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, 573975 + ... + 575433.

Almost surely, 2^838493136 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 838493136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1268547280).

838493136 is an abundant number, since it is smaller than the sum of its proper divisors (1698601424).

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

838493136 is a wasteful number, since it uses less digits than its factorization.

838493136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793 (or 1784 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 838493136 is about 28956.7459497783. The cubic root of 838493136 is about 942.9742581007.

The spelling of 838493136 in words is "eight hundred thirty-eight million, four hundred ninety-three thousand, one hundred thirty-six".