838400052 has 48 divisors (see below), whose sum is σ = 2238545792. Its totient is φ = 239241600.

The previous prime is 838400027. The next prime is 838400077. The reversal of 838400052 is 250004838.

It is an interprime number because it is at equal distance from previous prime (838400027) and next prime (838400077).

It is a junction number, because it is equal to n+sod(n) for n = 838399992 and 838400019.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65802 + ... + 77502.

Almost surely, 2^838400052 is an apocalyptic number.

It is an amenable number.

838400052 is an abundant number, since it is smaller than the sum of its proper divisors (1400145740).

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

838400052 is a wasteful number, since it uses less digits than its factorization.

838400052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12568 (or 12566 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 838400052 is about 28955.1386113070. The cubic root of 838400052 is about 942.9393625401.

The spelling of 838400052 in words is "eight hundred thirty-eight million, four hundred thousand, fifty-two".