40731252 has 48 divisors (see below), whose sum is σ = 105017472. Its totient is φ = 12221440.

The previous prime is 40731239. The next prime is 40731287. The reversal of 40731252 is 25213704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352 + ... + 9032.

It is an arithmetic number, because the mean of its divisors is an integer number (2187864).

Almost surely, 2^40731252 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 40731252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52508736).

40731252 is an abundant number, since it is smaller than the sum of its proper divisors (64286220).

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

40731252 is a wasteful number, since it uses less digits than its factorization.

40731252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8728 (or 8726 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 40731252 is about 6382.1040417718. The cubic root of 40731252 is about 344.0666560035.

Adding to 40731252 its reverse (25213704), we get a palindrome (65944956).

The spelling of 40731252 in words is "forty million, seven hundred thirty-one thousand, two hundred fifty-two".