32294181640 has 128 divisors (see below), whose sum is σ = 87271176960. Its totient is φ = 10522358784.

The previous prime is 32294181607. The next prime is 32294181641. The reversal of 32294181640 is 4618149223.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 32294181593 and 32294181602.

It is not an unprimeable number, because it can be changed into a prime (32294181641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 409234 + ... + 481726.

It is an arithmetic number, because the mean of its divisors is an integer number (681806070).

Almost surely, 2^32294181640 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 32294181640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43635588480).

32294181640 is an abundant number, since it is smaller than the sum of its proper divisors (54976995320).

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

32294181640 is a wasteful number, since it uses less digits than its factorization.

32294181640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72591 (or 72587 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 32294181640 in words is "thirty-two billion, two hundred ninety-four million, one hundred eighty-one thousand, six hundred forty".