67424256 has 156 divisors (see below), whose sum is σ = 204447360. Its totient is φ = 21381120.

The previous prime is 67424233. The next prime is 67424257. The reversal of 67424256 is 65242476.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (80640) is a multiple of the sum of its prime factors (120).

It is a self number, because there is not a number n which added to its sum of digits gives 67424256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67424257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1142755 + ... + 1142813.

It is an arithmetic number, because the mean of its divisors is an integer number (1310560).

Almost surely, 2^67424256 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 67424256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102223680).

67424256 is an abundant number, since it is smaller than the sum of its proper divisors (137023104).

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

67424256 is a wasteful number, since it uses less digits than its factorization.

67424256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 95 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 67424256 is about 8211.2274356517. The cubic root of 67424256 is about 407.0102885635.

The spelling of 67424256 in words is "sixty-seven million, four hundred twenty-four thousand, two hundred fifty-six".