38720077 has 4 divisors (see below), whose sum is σ = 42240096. Its totient is φ = 35200060.

The previous prime is 38720047. The next prime is 38720083. The reversal of 38720077 is 77002783.

38720077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38720077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38720047) 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, 1759993 + ... + 1760014.

It is an arithmetic number, because the mean of its divisors is an integer number (10560024).

Almost surely, 2^38720077 is an apocalyptic number.

It is an amenable number.

38720077 is a deficient number, since it is larger than the sum of its proper divisors (3520019).

38720077 is a wasteful number, since it uses less digits than its factorization.

38720077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520018.

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 38720077 is about 6222.5458616229. The cubic root of 38720077 is about 338.3078465814.

The spelling of 38720077 in words is "thirty-eight million, seven hundred twenty thousand, seventy-seven".