68464128 has 120 divisors (see below), whose sum is σ = 192463128. Its totient is φ = 21618688.

The previous prime is 68464111. The next prime is 68464129. The reversal of 68464128 is 82146486.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68464129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1291750 + ... + 1291802.

Almost surely, 2^68464128 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 68464128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96231564).

68464128 is an abundant number, since it is smaller than the sum of its proper divisors (123999000).

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

68464128 is an equidigital number, since it uses as much as digits as its factorization.

68464128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 87 counting only the distinct ones).

The product of its digits is 73728, while the sum is 39.

The square root of 68464128 is about 8274.3052880589. The cubic root of 68464128 is about 409.0920379587.

The spelling of 68464128 in words is "sixty-eight million, four hundred sixty-four thousand, one hundred twenty-eight".