38161720 has 16 divisors (see below), whose sum is σ = 85863960. Its totient is φ = 15264672.

The previous prime is 38161703. The next prime is 38161727. The reversal of 38161720 is 2716183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38161727) 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, 476982 + ... + 477061.

Almost surely, 2^38161720 is an apocalyptic number.

It is an amenable number.

38161720 is an abundant number, since it is smaller than the sum of its proper divisors (47702240).

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

38161720 is a wasteful number, since it uses less digits than its factorization.

38161720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954054 (or 954050 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 38161720 is about 6177.5173006638. The cubic root of 38161720 is about 336.6737943573.

The spelling of 38161720 in words is "thirty-eight million, one hundred sixty-one thousand, seven hundred twenty".