38433440 has 24 divisors (see below), whose sum is σ = 90799380. Its totient is φ = 15373312.

The previous prime is 38433407. The next prime is 38433449. The reversal of 38433440 is 4433483.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 31315216 + 7118224 = 5596^2 + 2668^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38433449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119945 + ... + 120264.

Almost surely, 2^38433440 is an apocalyptic number.

It is an amenable number.

38433440 is an abundant number, since it is smaller than the sum of its proper divisors (52365940).

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

38433440 is a wasteful number, since it uses less digits than its factorization.

38433440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240224 (or 240216 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 38433440 is about 6199.4709451694. The cubic root of 38433440 is about 337.4709696109.

The spelling of 38433440 in words is "thirty-eight million, four hundred thirty-three thousand, four hundred forty".