38780040 has 64 divisors (see below), whose sum is σ = 125294400. Its totient is φ = 9545472.

The previous prime is 38780017. The next prime is 38780089. The reversal of 38780040 is 4008783.

38780040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 10870 + ... + 13989.

It is an arithmetic number, because the mean of its divisors is an integer number (1957725).

Almost surely, 2^38780040 is an apocalyptic number.

38780040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38780040 is an abundant number, since it is smaller than the sum of its proper divisors (86514360).

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

38780040 is a wasteful number, since it uses less digits than its factorization.

38780040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24886 (or 24882 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 38780040 is about 6227.3622024096. The cubic root of 38780040 is about 338.4823941906.

The spelling of 38780040 in words is "thirty-eight million, seven hundred eighty thousand, forty".