67223240 has 64 divisors (see below), whose sum is σ = 173577600. Its totient is φ = 22952448.

The previous prime is 67223209. The next prime is 67223257. The reversal of 67223240 is 4232276.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114227 + ... + 114813.

It is an arithmetic number, because the mean of its divisors is an integer number (2712150).

Almost surely, 2^67223240 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 67223240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86788800).

67223240 is an abundant number, since it is smaller than the sum of its proper divisors (106354360).

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

67223240 is a wasteful number, since it uses less digits than its factorization.

67223240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014 (or 1010 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 67223240 is about 8198.9779850906. The cubic root of 67223240 is about 406.6054044896.

The spelling of 67223240 in words is "sixty-seven million, two hundred twenty-three thousand, two hundred forty".