40340436 has 24 divisors (see below), whose sum is σ = 98220864. Its totient is φ = 12862080.

The previous prime is 40340387. The next prime is 40340437. The reversal of 40340436 is 63404304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40340437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72805 + ... + 73356.

It is an arithmetic number, because the mean of its divisors is an integer number (4092536).

Almost surely, 2^40340436 is an apocalyptic number.

40340436 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

40340436 is an abundant number, since it is smaller than the sum of its proper divisors (57880428).

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

40340436 is a wasteful number, since it uses less digits than its factorization.

40340436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146191 (or 146189 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 40340436 is about 6351.4121264487. The cubic root of 40340436 is about 342.9626787217.

The spelling of 40340436 in words is "forty million, three hundred forty thousand, four hundred thirty-six".