38388040 has 32 divisors (see below), whose sum is σ = 91455480. Its totient is φ = 14451712.

The previous prime is 38388029. The next prime is 38388061. The reversal of 38388040 is 4088383.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 35545444 + 2842596 = 5962^2 + 1686^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 38387987 and 38388005.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27547 + ... + 28906.

Almost surely, 2^38388040 is an apocalyptic number.

It is an amenable number.

38388040 is an abundant number, since it is smaller than the sum of its proper divisors (53067440).

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

38388040 is a wasteful number, since it uses less digits than its factorization.

38388040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56481 (or 56477 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 38388040 is about 6195.8082604290. The cubic root of 38388040 is about 337.3380365994.

The spelling of 38388040 in words is "thirty-eight million, three hundred eighty-eight thousand, forty".