40343550 has 96 divisors (see below), whose sum is σ = 114180192. Its totient is φ = 9338880.

The previous prime is 40343543. The next prime is 40343573. The reversal of 40343550 is 5534304.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 40343550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32542 + ... + 33758.

It is an arithmetic number, because the mean of its divisors is an integer number (1189377).

Almost surely, 2^40343550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40343550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57090096).

40343550 is an abundant number, since it is smaller than the sum of its proper divisors (73836642).

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

40343550 is a wasteful number, since it uses less digits than its factorization.

40343550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262 (or 1257 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 40343550 is about 6351.6572640532. The cubic root of 40343550 is about 342.9715032694.

Adding to 40343550 its reverse (5534304), we get a palindrome (45877854).

The spelling of 40343550 in words is "forty million, three hundred forty-three thousand, five hundred fifty".