40731630 has 48 divisors (see below), whose sum is σ = 103199184. Its totient is φ = 10287360.

The previous prime is 40731617. The next prime is 40731637. The reversal of 40731630 is 3613704.

It is a self number, because there is not a number n which added to its sum of digits gives 40731630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40731637) 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, 8950 + ... + 12710.

It is an arithmetic number, because the mean of its divisors is an integer number (2149983).

Almost surely, 2^40731630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40731630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51599592).

40731630 is an abundant number, since it is smaller than the sum of its proper divisors (62467554).

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

40731630 is a wasteful number, since it uses less digits than its factorization.

40731630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3809 (or 3790 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 40731630 is about 6382.1336557612. The cubic root of 40731630 is about 344.0677203525.

The spelling of 40731630 in words is "forty million, seven hundred thirty-one thousand, six hundred thirty".