38545920 has 240 divisors, whose sum is σ = 153204480. Its totient is φ = 8773632.

The previous prime is 38545879. The next prime is 38545933. The reversal of 38545920 is 2954583.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161161 + ... + 161399.

It is an arithmetic number, because the mean of its divisors is an integer number (638352).

Almost surely, 2^38545920 is an apocalyptic number.

38545920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38545920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76602240).

38545920 is an abundant number, since it is smaller than the sum of its proper divisors (114658560).

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

38545920 is a wasteful number, since it uses less digits than its factorization.

38545920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 38545920 is about 6208.5360593299. The cubic root of 38545920 is about 337.7998651813.

The spelling of 38545920 in words is "thirty-eight million, five hundred forty-five thousand, nine hundred twenty".