38403738 has 12 divisors (see below), whose sum is σ = 83208138. Its totient is φ = 12801240.

The previous prime is 38403737. The next prime is 38403763. The reversal of 38403738 is 83730483.

It can be written as a sum of positive squares in only one way, i.e., 37417689 + 986049 = 6117^2 + 993^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38403733) 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, 1066753 + ... + 1066788.

Almost surely, 2^38403738 is an apocalyptic number.

38403738 is an abundant number, since it is smaller than the sum of its proper divisors (44804400).

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

38403738 is a wasteful number, since it uses less digits than its factorization.

38403738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133549 (or 2133546 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 38403738 is about 6197.0749551704. The cubic root of 38403738 is about 337.3840128186.

The spelling of 38403738 in words is "thirty-eight million, four hundred three thousand, seven hundred thirty-eight".