40021352 has 32 divisors (see below), whose sum is σ = 87220800. Its totient is φ = 16859904.

The previous prime is 40021339. The next prime is 40021361. The reversal of 40021352 is 25312004.

It is a self number, because there is not a number n which added to its sum of digits gives 40021352.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2753 + ... + 9360.

It is an arithmetic number, because the mean of its divisors is an integer number (2725650).

Almost surely, 2^40021352 is an apocalyptic number.

It is an amenable number.

40021352 is an abundant number, since it is smaller than the sum of its proper divisors (47199448).

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

40021352 is a wasteful number, since it uses less digits than its factorization.

40021352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12185 (or 12181 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 40021352 is about 6326.2431189451. The cubic root of 40021352 is about 342.0560308549.

Adding to 40021352 its reverse (25312004), we get a palindrome (65333356).

The spelling of 40021352 in words is "forty million, twenty-one thousand, three hundred fifty-two".