68189436 has 36 divisors (see below), whose sum is σ = 196992432. Its totient is φ = 19482624.

The previous prime is 68189417. The next prime is 68189441. The reversal of 68189436 is 63498186.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 68189391 and 68189400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135045 + ... + 135548.

It is an arithmetic number, because the mean of its divisors is an integer number (5472012).

Almost surely, 2^68189436 is an apocalyptic number.

It is an amenable number.

68189436 is an abundant number, since it is smaller than the sum of its proper divisors (128802996).

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

68189436 is a wasteful number, since it uses less digits than its factorization.

68189436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270610 (or 270605 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 68189436 is about 8257.6895073622. The cubic root of 68189436 is about 408.5441844633.

The spelling of 68189436 in words is "sixty-eight million, one hundred eighty-nine thousand, four hundred thirty-six".