38778288 has 40 divisors (see below), whose sum is σ = 100440000. Its totient is φ = 12892224.

The previous prime is 38778287. The next prime is 38778301. The reversal of 38778288 is 88287783.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 38778288.

It is not an unprimeable number, because it can be changed into a prime (38778287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23143 + ... + 24761.

It is an arithmetic number, because the mean of its divisors is an integer number (2511000).

Almost surely, 2^38778288 is an apocalyptic number.

It is an amenable number.

38778288 is an abundant number, since it is smaller than the sum of its proper divisors (61661712).

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

38778288 is a wasteful number, since it uses less digits than its factorization.

38778288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2129 (or 2123 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 51.

The square root of 38778288 is about 6227.2215313091. The cubic root of 38778288 is about 338.4772968082.

The spelling of 38778288 in words is "thirty-eight million, seven hundred seventy-eight thousand, two hundred eighty-eight".