38401816 has 16 divisors (see below), whose sum is σ = 72717840. Its totient is φ = 19010400.

The previous prime is 38401813. The next prime is 38401823. The reversal of 38401816 is 61810483.

38401816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38401813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22956 + ... + 24571.

It is an arithmetic number, because the mean of its divisors is an integer number (4544865).

Almost surely, 2^38401816 is an apocalyptic number.

It is an amenable number.

38401816 is a deficient number, since it is larger than the sum of its proper divisors (34316024).

38401816 is a wasteful number, since it uses less digits than its factorization.

38401816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47634 (or 47630 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 38401816 is about 6196.9198800695. The cubic root of 38401816 is about 337.3783843484.

The spelling of 38401816 in words is "thirty-eight million, four hundred one thousand, eight hundred sixteen".