38720769 has 16 divisors (see below), whose sum is σ = 54124224. Its totient is φ = 24595200.

The previous prime is 38720761. The next prime is 38720777. The reversal of 38720769 is 96702783.

It is an interprime number because it is at equal distance from previous prime (38720761) and next prime (38720777).

It is not a de Polignac number, because 38720769 - 2³ = 38720761 is a prime.

It is a super-2 number, since 2×38720769² = 2998595903902722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38720769.

It is not an unprimeable number, because it can be changed into a prime (38720761) 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 15 ways as a sum of consecutive naturals, for example, 1629 + ... + 8949.

It is an arithmetic number, because the mean of its divisors is an integer number (3382764).

Almost surely, 2^38720769 is an apocalyptic number.

It is an amenable number.

38720769 is a deficient number, since it is larger than the sum of its proper divisors (15403455).

38720769 is a wasteful number, since it uses less digits than its factorization.

38720769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7408.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 38720769 is about 6222.6014656251. The cubic root of 38720769 is about 338.3098619668.

The spelling of 38720769 in words is "thirty-eight million, seven hundred twenty thousand, seven hundred sixty-nine".