40023152 has 40 divisors (see below), whose sum is σ = 83911296. Its totient is φ = 18383616.

The previous prime is 40023149. The next prime is 40023157. The reversal of 40023152 is 25132004.

It is a super-3 number, since 3×40023152³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40023152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40023157) 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 7 ways as a sum of consecutive naturals, for example, 65633 + ... + 66239.

Almost surely, 2^40023152 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 40023152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41955648).

40023152 is an abundant number, since it is smaller than the sum of its proper divisors (43888144).

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

40023152 is a wasteful number, since it uses less digits than its factorization.

40023152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945 (or 939 counting only the distinct ones).

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

The square root of 40023152 is about 6326.3853818749. The cubic root of 40023152 is about 342.0611588811.

Adding to 40023152 its reverse (25132004), we get a palindrome (65155156).

The spelling of 40023152 in words is "forty million, twenty-three thousand, one hundred fifty-two".