32405892078 has 64 divisors (see below), whose sum is σ = 76136620032. Its totient is φ = 9003671040.

The previous prime is 32405892053. The next prime is 32405892109. The reversal of 32405892078 is 87029850423.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent 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, 187123 + ... + 315953.

It is an arithmetic number, because the mean of its divisors is an integer number (1189634688).

Almost surely, 2^32405892078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32405892078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38068310016).

32405892078 is an abundant number, since it is smaller than the sum of its proper divisors (43730727954).

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

32405892078 is a wasteful number, since it uses less digits than its factorization.

32405892078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129009.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 32405892078 in words is "thirty-two billion, four hundred five million, eight hundred ninety-two thousand, seventy-eight".