40209752 has 24 divisors (see below), whose sum is σ = 82872300. Its totient is φ = 18276720.

The previous prime is 40209751. The next prime is 40209761. The reversal of 40209752 is 25790204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40209751) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19802 + ... + 21737.

Almost surely, 2^40209752 is an apocalyptic number.

It is an amenable number.

40209752 is an abundant number, since it is smaller than the sum of its proper divisors (42662548).

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

40209752 is a wasteful number, since it uses less digits than its factorization.

40209752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41567 (or 41552 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 40209752 is about 6341.1159901077. The cubic root of 40209752 is about 342.5919322720.

Adding to 40209752 its reverse (25790204), we get a palindrome (65999956).

The spelling of 40209752 in words is "forty million, two hundred nine thousand, seven hundred fifty-two".