67138992 has 30 divisors (see below), whose sum is σ = 187896332. Its totient is φ = 22379616.

The previous prime is 67138987. The next prime is 67138993. The reversal of 67138992 is 29983176.

It is not an unprimeable number, because it can be changed into a prime (67138993) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 232978 + ... + 233265.

Almost surely, 2^67138992 is an apocalyptic number.

It is an amenable number.

67138992 is an abundant number, since it is smaller than the sum of its proper divisors (120757340).

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

67138992 is a wasteful number, since it uses less digits than its factorization.

67138992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466257 (or 466248 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 67138992 is about 8193.8386608476. The cubic root of 67138992 is about 406.4354731162.

The spelling of 67138992 in words is "sixty-seven million, one hundred thirty-eight thousand, nine hundred ninety-two".