38668071 has 32 divisors (see below), whose sum is σ = 57745408. Its totient is φ = 22861440.

The previous prime is 38668061. The next prime is 38668073. The reversal of 38668071 is 17086683.

It is not a de Polignac number, because 38668071 - 2¹³ = 38659879 is a prime.

It is a super-2 number, since 2×38668071² = 2990439429722082, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38668073) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 183156 + ... + 183366.

It is an arithmetic number, because the mean of its divisors is an integer number (1804544).

Almost surely, 2^38668071 is an apocalyptic number.

38668071 is a deficient number, since it is larger than the sum of its proper divisors (19077337).

38668071 is a wasteful number, since it uses less digits than its factorization.

38668071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 38668071 is about 6218.3656212867. The cubic root of 38668071 is about 338.1563151957.

The spelling of 38668071 in words is "thirty-eight million, six hundred sixty-eight thousand, seventy-one".