67428834 has 64 divisors (see below), whose sum is σ = 164021760. Its totient is φ = 18213120.

The previous prime is 67428827. The next prime is 67428841. The reversal of 67428834 is 43882476.

It is an interprime number because it is at equal distance from previous prime (67428827) and next prime (67428841).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19737 + ... + 22899.

It is an arithmetic number, because the mean of its divisors is an integer number (2562840).

Almost surely, 2^67428834 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67428834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82010880).

67428834 is an abundant number, since it is smaller than the sum of its proper divisors (96592926).

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

67428834 is a wasteful number, since it uses less digits than its factorization.

67428834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3215.

The product of its digits is 258048, while the sum is 42.

The square root of 67428834 is about 8211.5061955770. The cubic root of 67428834 is about 407.0195001393.

It can be divided in two parts, 6742 and 8834, that added together give a triangular number (15576 = T₁₇₆).

The spelling of 67428834 in words is "sixty-seven million, four hundred twenty-eight thousand, eight hundred thirty-four".