40251392 has 52 divisors (see below), whose sum is σ = 83351616. Its totient is φ = 19415040.

The previous prime is 40251377. The next prime is 40251401. The reversal of 40251392 is 29315204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126818 + ... + 127134.

Almost surely, 2^40251392 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 40251392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41675808).

40251392 is an abundant number, since it is smaller than the sum of its proper divisors (43100224).

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

40251392 is an equidigital number, since it uses as much as digits as its factorization.

40251392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372 (or 350 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 40251392 is about 6344.3984742448. The cubic root of 40251392 is about 342.7101507461.

Adding to 40251392 its reverse (29315204), we get a palindrome (69566596).

The spelling of 40251392 in words is "forty million, two hundred fifty-one thousand, three hundred ninety-two".