38406720104 has 8 divisors (see below), whose sum is σ = 72012600210. Its totient is φ = 19203360048.

The previous prime is 38406720103. The next prime is 38406720119. The reversal of 38406720104 is 40102760483.

It can be written as a sum of positive squares in only one way, i.e., 21114996100 + 17291724004 = 145310^2 + 131498^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×38406720104² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38406720103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2400419999 + ... + 2400420014.

Almost surely, 2^38406720104 is an apocalyptic number.

It is an amenable number.

38406720104 is a deficient number, since it is larger than the sum of its proper divisors (33605880106).

38406720104 is a wasteful number, since it uses less digits than its factorization.

38406720104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4800840019 (or 4800840015 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The spelling of 38406720104 in words is "thirty-eight billion, four hundred six million, seven hundred twenty thousand, one hundred four".