40404352 has 32 divisors (see below), whose sum is σ = 82467000. Its totient is φ = 19706880.

The previous prime is 40404319. The next prime is 40404361. The reversal of 40404352 is 25340404.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1399 + ... + 9097.

Almost surely, 2^40404352 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 40404352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41233500).

40404352 is an abundant number, since it is smaller than the sum of its proper divisors (42062648).

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

40404352 is an equidigital number, since it uses as much as digits as its factorization.

40404352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7754 (or 7742 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 40404352 is about 6356.4417719350. The cubic root of 40404352 is about 343.1437149036.

Adding to 40404352 its reverse (25340404), we get a palindrome (65744756).

The spelling of 40404352 in words is "forty million, four hundred four thousand, three hundred fifty-two".