40344234 has 64 divisors (see below), whose sum is σ = 95800320. Its totient is φ = 11088000.

The previous prime is 40344229. The next prime is 40344257. The reversal of 40344234 is 43244304.

It is a happy number.

It is a plaindrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160609 + ... + 160859.

It is an arithmetic number, because the mean of its divisors is an integer number (1496880).

Almost surely, 2^40344234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40344234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47900160).

40344234 is an abundant number, since it is smaller than the sum of its proper divisors (55456086).

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

40344234 is a wasteful number, since it uses less digits than its factorization.

40344234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395.

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 40344234 is about 6351.7111080401. The cubic root of 40344234 is about 342.9734415485.

Adding to 40344234 its reverse (43244304), we get a palindrome (83588538).

The spelling of 40344234 in words is "forty million, three hundred forty-four thousand, two hundred thirty-four".