40520352 has 24 divisors (see below), whose sum is σ = 106366176. Its totient is φ = 13506752.

The previous prime is 40520323. The next prime is 40520357. The reversal of 40520352 is 25302504.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (40520357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210948 + ... + 211139.

It is an arithmetic number, because the mean of its divisors is an integer number (4431924).

Almost surely, 2^40520352 is an apocalyptic number.

It is an amenable number.

40520352 is an abundant number, since it is smaller than the sum of its proper divisors (65845824).

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

40520352 is a wasteful number, since it uses less digits than its factorization.

40520352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422100 (or 422092 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 40520352 is about 6365.5598339816. The cubic root of 40520352 is about 343.4717871436.

Adding to 40520352 its reverse (25302504), we get a palindrome (65822856).

The spelling of 40520352 in words is "forty million, five hundred twenty thousand, three hundred fifty-two".