40661832 has 96 divisors (see below), whose sum is σ = 110103840. Its totient is φ = 12499200.

The previous prime is 40661827. The next prime is 40661839. The reversal of 40661832 is 23816604.

It is a self number, because there is not a number n which added to its sum of digits gives 40661832.

It is not an unprimeable number, because it can be changed into a prime (40661839) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 945603 + ... + 945645.

It is an arithmetic number, because the mean of its divisors is an integer number (1146915).

Almost surely, 2^40661832 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 40661832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55051920).

40661832 is an abundant number, since it is smaller than the sum of its proper divisors (69442008).

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

40661832 is a wasteful number, since it uses less digits than its factorization.

40661832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 40661832 is about 6376.6630771901. The cubic root of 40661832 is about 343.8710757188.

The spelling of 40661832 in words is "forty million, six hundred sixty-one thousand, eight hundred thirty-two".