38445880 has 128 divisors (see below), whose sum is σ = 102643200. Its totient is φ = 12812800.

The previous prime is 38445863. The next prime is 38445881. The reversal of 38445880 is 8854483.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38445881) 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 31 ways as a sum of consecutive naturals, for example, 293415 + ... + 293545.

It is an arithmetic number, because the mean of its divisors is an integer number (801900).

Almost surely, 2^38445880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38445880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51321600).

38445880 is an abundant number, since it is smaller than the sum of its proper divisors (64197320).

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

38445880 is a wasteful number, since it uses less digits than its factorization.

38445880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 40.

The square root of 38445880 is about 6200.4741754159. The cubic root of 38445880 is about 337.5073761534.

It can be divided in two parts, 384 and 45880, that added together give a palindrome (46264).

The spelling of 38445880 in words is "thirty-eight million, four hundred forty-five thousand, eight hundred eighty".