38840436 has 36 divisors (see below), whose sum is σ = 99651552. Its totient is φ = 12752784.

The previous prime is 38840411. The next prime is 38840441. The reversal of 38840436 is 63404883.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 38840436.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5640 + ... + 10463.

Almost surely, 2^38840436 is an apocalyptic number.

38840436 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

38840436 is an abundant number, since it is smaller than the sum of its proper divisors (60811116).

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

38840436 is a wasteful number, since it uses less digits than its factorization.

38840436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16180 (or 16175 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 38840436 is about 6232.2095600196. The cubic root of 38840436 is about 338.6580204425.

The spelling of 38840436 in words is "thirty-eight million, eight hundred forty thousand, four hundred thirty-six".