40661352 has 80 divisors (see below), whose sum is σ = 114998400. Its totient is φ = 13422240.

The previous prime is 40661351. The next prime is 40661353. The reversal of 40661352 is 25316604.

40661352 is a `hidden beast` number, since 40 + 6 + 613 + 5 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (40661351) and next prime (40661353).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40661351) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 84649 + ... + 85127.

It is an arithmetic number, because the mean of its divisors is an integer number (1437480).

Almost surely, 2^40661352 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 40661352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57499200).

40661352 is an abundant number, since it is smaller than the sum of its proper divisors (74337048).

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

40661352 is a wasteful number, since it uses less digits than its factorization.

40661352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 40661352 is about 6376.6254398388. The cubic root of 40661352 is about 343.8697226172.

Adding to 40661352 its reverse (25316604), we get a palindrome (65977956).

The spelling of 40661352 in words is "forty million, six hundred sixty-one thousand, three hundred fifty-two".