67838140 has 12 divisors (see below), whose sum is σ = 142460136. Its totient is φ = 27135248.

The previous prime is 67838123. The next prime is 67838159. The reversal of 67838140 is 4183876.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 67838140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1695934 + ... + 1695973.

It is an arithmetic number, because the mean of its divisors is an integer number (11871678).

Almost surely, 2^67838140 is an apocalyptic number.

It is an amenable number.

67838140 is an abundant number, since it is smaller than the sum of its proper divisors (74621996).

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

67838140 is a wasteful number, since it uses less digits than its factorization.

67838140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3391916 (or 3391914 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 67838140 is about 8236.3912000342. The cubic root of 67838140 is about 407.8414015766.

The spelling of 67838140 in words is "sixty-seven million, eight hundred thirty-eight thousand, one hundred forty".