40243650 has 24 divisors (see below), whose sum is σ = 99804624. Its totient is φ = 10731600.

The previous prime is 40243631. The next prime is 40243661. The reversal of 40243650 is 5634204.

It is a self number, because there is not a number n which added to its sum of digits gives 40243650.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133996 + ... + 134295.

It is an arithmetic number, because the mean of its divisors is an integer number (4158526).

Almost surely, 2^40243650 is an apocalyptic number.

40243650 is an abundant number, since it is smaller than the sum of its proper divisors (59560974).

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

40243650 is a wasteful number, since it uses less digits than its factorization.

40243650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268306 (or 268301 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 40243650 is about 6343.7883003770. The cubic root of 40243650 is about 342.6881769130.

Adding to 40243650 its reverse (5634204), we get a palindrome (45877854).

The spelling of 40243650 in words is "forty million, two hundred forty-three thousand, six hundred fifty".