40281252 has 48 divisors (see below), whose sum is σ = 102924864. Its totient is φ = 12160000.

The previous prime is 40281251. The next prime is 40281281. The reversal of 40281252 is 25218204.

It is not an unprimeable number, because it can be changed into a prime (40281251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52552 + ... + 53312.

It is an arithmetic number, because the mean of its divisors is an integer number (2144268).

Almost surely, 2^40281252 is an apocalyptic number.

It is an amenable number.

40281252 is an abundant number, since it is smaller than the sum of its proper divisors (62643612).

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

40281252 is a wasteful number, since it uses less digits than its factorization.

40281252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180 (or 1178 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 40281252 is about 6346.7512949540. The cubic root of 40281252 is about 342.7948749022.

Adding to 40281252 its reverse (25218204), we get a palindrome (65499456).

The spelling of 40281252 in words is "forty million, two hundred eighty-one thousand, two hundred fifty-two".