838622928 has 240 divisors, whose sum is σ = 2659829760. Its totient is φ = 225899520.

The previous prime is 838622921. The next prime is 838622933. The reversal of 838622928 is 829226838.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838622921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2189425 + ... + 2189807.

It is an arithmetic number, because the mean of its divisors is an integer number (11082624).

Almost surely, 2^838622928 is an apocalyptic number.

838622928 is a gapful number since it is divisible by the number (88) 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 838622928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1329914880).

838622928 is an abundant number, since it is smaller than the sum of its proper divisors (1821206832).

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

838622928 is a wasteful number, since it uses less digits than its factorization.

838622928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458 (or 441 counting only the distinct ones).

The product of its digits is 663552, while the sum is 48.

The square root of 838622928 is about 28958.9869988575. The cubic root of 838622928 is about 943.0229105365.

The spelling of 838622928 in words is "eight hundred thirty-eight million, six hundred twenty-two thousand, nine hundred twenty-eight".