40631382 has 60 divisors (see below), whose sum is σ = 99983268. Its totient is φ = 12231000.

The previous prime is 40631351. The next prime is 40631387. The reversal of 40631382 is 28313604.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40631387) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 269007 + ... + 269157.

Almost surely, 2^40631382 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40631382, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49991634).

40631382 is an abundant number, since it is smaller than the sum of its proper divisors (59351886).

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

40631382 is a wasteful number, since it uses less digits than its factorization.

40631382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 40631382 is about 6374.2750176000. The cubic root of 40631382 is about 343.7852172403.

Adding to 40631382 its reverse (28313604), we get a palindrome (68944986).

It can be divided in two parts, 4063 and 1382, that added together give a palindrome (5445).

The spelling of 40631382 in words is "forty million, six hundred thirty-one thousand, three hundred eighty-two".