67218040 has 32 divisors (see below), whose sum is σ = 152041680. Its totient is φ = 26744832.

The previous prime is 67218023. The next prime is 67218061. The reversal of 67218040 is 4081276.

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, 3367 + ... + 12073.

Almost surely, 2^67218040 is an apocalyptic number.

It is an amenable number.

67218040 is an abundant number, since it is smaller than the sum of its proper divisors (84823640).

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

67218040 is a wasteful number, since it uses less digits than its factorization.

67218040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8911 (or 8907 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 67218040 is about 8198.6608662635. The cubic root of 67218040 is about 406.5949200072.

It can be divided in two parts, 672180 and 40, that added together give a triangular number (672220 = T₁₁₅₉).

The spelling of 67218040 in words is "sixty-seven million, two hundred eighteen thousand, forty".