38720067 has 16 divisors (see below), whose sum is σ = 55212192. Its totient is φ = 24051200.

The previous prime is 38720047. The next prime is 38720083. The reversal of 38720067 is 76002783.

It is a cyclic number.

It is not a de Polignac number, because 38720067 - 2¹¹ = 38718019 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (38720047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1393 + ... + 8909.

It is an arithmetic number, because the mean of its divisors is an integer number (3450762).

Almost surely, 2^38720067 is an apocalyptic number.

38720067 is a deficient number, since it is larger than the sum of its proper divisors (16492125).

38720067 is a wasteful number, since it uses less digits than its factorization.

38720067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7638.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 38720067 is about 6222.5450580932. The cubic root of 38720067 is about 338.3078174572.

The spelling of 38720067 in words is "thirty-eight million, seven hundred twenty thousand, sixty-seven".