67284426 has 64 divisors (see below), whose sum is σ = 153653760. Its totient is φ = 19460160.

The previous prime is 67284421. The next prime is 67284433. The reversal of 67284426 is 62448276.

It is not an unprimeable number, because it can be changed into a prime (67284421) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 143845 + ... + 144311.

It is an arithmetic number, because the mean of its divisors is an integer number (2400840).

Almost surely, 2^67284426 is an apocalyptic number.

67284426 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 67284426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76826880).

67284426 is an abundant number, since it is smaller than the sum of its proper divisors (86369334).

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

67284426 is a wasteful number, since it uses less digits than its factorization.

67284426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579.

The product of its digits is 129024, while the sum is 39.

The square root of 67284426 is about 8202.7084551385. The cubic root of 67284426 is about 406.7287299646.

The spelling of 67284426 in words is "sixty-seven million, two hundred eighty-four thousand, four hundred twenty-six".