67189420 has 12 divisors (see below), whose sum is σ = 141097824. Its totient is φ = 26875760.

The previous prime is 67189391. The next prime is 67189429. The reversal of 67189420 is 2498176.

It is a self number, because there is not a number n which added to its sum of digits gives 67189420.

It is not an unprimeable number, because it can be changed into a prime (67189429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1679716 + ... + 1679755.

It is an arithmetic number, because the mean of its divisors is an integer number (11758152).

Almost surely, 2^67189420 is an apocalyptic number.

It is an amenable number.

67189420 is an abundant number, since it is smaller than the sum of its proper divisors (73908404).

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

67189420 is a wasteful number, since it uses less digits than its factorization.

67189420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3359480 (or 3359478 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 67189420 is about 8196.9152734428. The cubic root of 67189420 is about 406.5372053493.

The spelling of 67189420 in words is "sixty-seven million, one hundred eighty-nine thousand, four hundred twenty".