68420832 has 24 divisors (see below), whose sum is σ = 179604936. Its totient is φ = 22806912.

The previous prime is 68420761. The next prime is 68420857. The reversal of 68420832 is 23802486.

It is a tau number, because it is divible by the number of its divisors (24).

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 68420793 and 68420802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356263 + ... + 356454.

It is an arithmetic number, because the mean of its divisors is an integer number (7483539).

Almost surely, 2^68420832 is an apocalyptic number.

It is an amenable number.

68420832 is an abundant number, since it is smaller than the sum of its proper divisors (111184104).

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

68420832 is a wasteful number, since it uses less digits than its factorization.

68420832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712730 (or 712722 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 68420832 is about 8271.6885821457. The cubic root of 68420832 is about 409.0057845959.

The spelling of 68420832 in words is "sixty-eight million, four hundred twenty thousand, eight hundred thirty-two".