67421832 has 64 divisors (see below), whose sum is σ = 178606080. Its totient is φ = 21164352.

The previous prime is 67421831. The next prime is 67421857. The reversal of 67421832 is 23812476.

It is a junction number, because it is equal to n+sod(n) for n = 67421793 and 67421802.

It is not an unprimeable number, because it can be changed into a prime (67421831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36073 + ... + 37895.

It is an arithmetic number, because the mean of its divisors is an integer number (2790720).

Almost surely, 2^67421832 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 67421832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89303040).

67421832 is an abundant number, since it is smaller than the sum of its proper divisors (111184248).

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

67421832 is a wasteful number, since it uses less digits than its factorization.

67421832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922 (or 1918 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 67421832 is about 8211.0798315447. The cubic root of 67421832 is about 407.0054109679.

The spelling of 67421832 in words is "sixty-seven million, four hundred twenty-one thousand, eight hundred thirty-two".