40644348 has 48 divisors (see below), whose sum is σ = 103670784. Its totient is φ = 12337920.

The previous prime is 40644347. The next prime is 40644349. The reversal of 40644348 is 84344604.

It is an interprime number because it is at equal distance from previous prime (40644347) and next prime (40644349).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40644347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3111 + ... + 9537.

It is an arithmetic number, because the mean of its divisors is an integer number (2159808).

Almost surely, 2^40644348 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 40644348, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51835392).

40644348 is an abundant number, since it is smaller than the sum of its proper divisors (63026436).

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

40644348 is a wasteful number, since it uses less digits than its factorization.

40644348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6482 (or 6480 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 33.

The square root of 40644348 is about 6375.2919933129. The cubic root of 40644348 is about 343.8217821223.

The spelling of 40644348 in words is "forty million, six hundred forty-four thousand, three hundred forty-eight".