67389040 has 80 divisors (see below), whose sum is σ = 167489280. Its totient is φ = 25159680.

The previous prime is 67389031. The next prime is 67389043. The reversal of 67389040 is 4098376.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67389043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71452 + ... + 72388.

It is an arithmetic number, because the mean of its divisors is an integer number (2093616).

Almost surely, 2^67389040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67389040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83744640).

67389040 is an abundant number, since it is smaller than the sum of its proper divisors (100100240).

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

67389040 is a wasteful number, since it uses less digits than its factorization.

67389040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 67389040 is about 8209.0827745857. The cubic root of 67389040 is about 406.9394151056.

The spelling of 67389040 in words is "sixty-seven million, three hundred eighty-nine thousand, forty".