38780145 has 48 divisors (see below), whose sum is σ = 71839872. Its totient is φ = 19284480.

The previous prime is 38780141. The next prime is 38780191. The reversal of 38780145 is 54108783.

It is not a de Polignac number, because 38780145 - 2² = 38780141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38780141) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 124540 + ... + 124850.

It is an arithmetic number, because the mean of its divisors is an integer number (1496664).

Almost surely, 2^38780145 is an apocalyptic number.

It is an amenable number.

38780145 is a deficient number, since it is larger than the sum of its proper divisors (33059727).

38780145 is a wasteful number, since it uses less digits than its factorization.

38780145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502 (or 499 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 38780145 is about 6227.3706329397. The cubic root of 38780145 is about 338.4826996795.

The spelling of 38780145 in words is "thirty-eight million, seven hundred eighty thousand, one hundred forty-five".