38443920 has 40 divisors (see below), whose sum is σ = 119176896. Its totient is φ = 10251648.

The previous prime is 38443903. The next prime is 38443927. The reversal of 38443920 is 2934483.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (38443927) 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, 79852 + ... + 80331.

Almost surely, 2^38443920 is an apocalyptic number.

38443920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38443920 is an abundant number, since it is smaller than the sum of its proper divisors (80732976).

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

38443920 is a wasteful number, since it uses less digits than its factorization.

38443920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160199 (or 160193 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 38443920 is about 6200.3161209732. The cubic root of 38443920 is about 337.5016405956.

The spelling of 38443920 in words is "thirty-eight million, four hundred forty-three thousand, nine hundred twenty".