838431740 has 24 divisors (see below), whose sum is σ = 1782997440. Its totient is φ = 331126848.

The previous prime is 838431701. The next prime is 838431761. The reversal of 838431740 is 47134838.

It is a junction number, because it is equal to n+sod(n) for n = 838431694 and 838431703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263747 + ... + 266906.

It is an arithmetic number, because the mean of its divisors is an integer number (74291560).

Almost surely, 2^838431740 is an apocalyptic number.

It is an amenable number.

838431740 is an abundant number, since it is smaller than the sum of its proper divisors (944565700).

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

838431740 is a wasteful number, since it uses less digits than its factorization.

838431740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530741 (or 530739 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 838431740 is about 28955.6857974388. The cubic root of 838431740 is about 942.9512421060.

The spelling of 838431740 in words is "eight hundred thirty-eight million, four hundred thirty-one thousand, seven hundred forty".