838123722 has 48 divisors (see below), whose sum is σ = 1924420680. Its totient is φ = 263155200.

The previous prime is 838123711. The next prime is 838123739. The reversal of 838123722 is 227321838.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 501804801 + 336318921 = 22401^2 + 18339^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1822 + ... + 40982.

Almost surely, 2^838123722 is an apocalyptic number.

838123722 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 838123722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (962210340).

838123722 is an abundant number, since it is smaller than the sum of its proper divisors (1086296958).

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

838123722 is a wasteful number, since it uses less digits than its factorization.

838123722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39239 (or 39236 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 838123722 is about 28950.3665261772. The cubic root of 838123722 is about 942.8357560477.

The spelling of 838123722 in words is "eight hundred thirty-eight million, one hundred twenty-three thousand, seven hundred twenty-two".