38778055 has 16 divisors (see below), whose sum is σ = 49065984. Its totient is φ = 29377440.

The previous prime is 38778043. The next prime is 38778067. The reversal of 38778055 is 55087783.

It is an interprime number because it is at equal distance from previous prime (38778043) and next prime (38778067).

It is not a de Polignac number, because 38778055 - 2¹⁹ = 38253767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4624 + ... + 9946.

It is an arithmetic number, because the mean of its divisors is an integer number (3066624).

Almost surely, 2^38778055 is an apocalyptic number.

38778055 is a deficient number, since it is larger than the sum of its proper divisors (10287929).

38778055 is a wasteful number, since it uses less digits than its factorization.

38778055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5406.

The product of its (nonzero) digits is 235200, while the sum is 43.

The square root of 38778055 is about 6227.2028230980. The cubic root of 38778055 is about 338.4766188913.

The spelling of 38778055 in words is "thirty-eight million, seven hundred seventy-eight thousand, fifty-five".