38778084 has 36 divisors (see below), whose sum is σ = 98948304. Its totient is φ = 12803952.

The previous prime is 38778083. The next prime is 38778119. The reversal of 38778084 is 48087783.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×38778084² = 3007479597422112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38778083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1182 + ... + 8885.

It is an arithmetic number, because the mean of its divisors is an integer number (2748564).

Almost surely, 2^38778084 is an apocalyptic number.

It is an amenable number.

38778084 is an abundant number, since it is smaller than the sum of its proper divisors (60170220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38778084 is a wasteful number, since it uses less digits than its factorization.

38778084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10184 (or 10179 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 38778084 is about 6227.2051515909. The cubic root of 38778084 is about 338.4767032673.

The spelling of 38778084 in words is "thirty-eight million, seven hundred seventy-eight thousand, eighty-four".