38561680 has 20 divisors (see below), whose sum is σ = 89656092. Its totient is φ = 15424640.

The previous prime is 38561657. The next prime is 38561683. The reversal of 38561680 is 8616583.

It can be written as a sum of positive squares in 2 ways, for example, as 4875264 + 33686416 = 2208^2 + 5804^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (38561683) 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 3 ways as a sum of consecutive naturals, for example, 240931 + ... + 241090.

Almost surely, 2^38561680 is an apocalyptic number.

It is an amenable number.

38561680 is an abundant number, since it is smaller than the sum of its proper divisors (51094412).

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

38561680 is a wasteful number, since it uses less digits than its factorization.

38561680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482034 (or 482028 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 38561680 is about 6209.8051499222. The cubic root of 38561680 is about 337.8458968623.

The spelling of 38561680 in words is "thirty-eight million, five hundred sixty-one thousand, six hundred eighty".