40343472 has 120 divisors (see below), whose sum is σ = 127012704. Its totient is φ = 11860992.

The previous prime is 40343461. The next prime is 40343519. The reversal of 40343472 is 27434304.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42588 + ... + 43524.

Almost surely, 2^40343472 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 40343472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63506352).

40343472 is an abundant number, since it is smaller than the sum of its proper divisors (86669232).

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

40343472 is a wasteful number, since it uses less digits than its factorization.

40343472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987 (or 978 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 27.

The square root of 40343472 is about 6351.6511239205. The cubic root of 40343472 is about 342.9712822361.

Adding to 40343472 its reverse (27434304), we get a palindrome (67777776).

The spelling of 40343472 in words is "forty million, three hundred forty-three thousand, four hundred seventy-two".