40308252 has 12 divisors (see below), whose sum is σ = 94052616. Its totient is φ = 13436080.

The previous prime is 40308239. The next prime is 40308263. The reversal of 40308252 is 25280304.

It is a tau number, because it is divible by the number of its divisors (12).

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, 1679499 + ... + 1679522.

It is an arithmetic number, because the mean of its divisors is an integer number (7837718).

Almost surely, 2^40308252 is an apocalyptic number.

It is an amenable number.

40308252 is an abundant number, since it is smaller than the sum of its proper divisors (53744364).

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

40308252 is a wasteful number, since it uses less digits than its factorization.

40308252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3359028 (or 3359026 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 40308252 is about 6348.8780111135. The cubic root of 40308252 is about 342.8714481134.

Adding to 40308252 its reverse (25280304), we get a palindrome (65588556).

The spelling of 40308252 in words is "forty million, three hundred eight thousand, two hundred fifty-two".