3780520 has 16 divisors (see below), whose sum is σ = 8506260. Its totient is φ = 1512192.

The previous prime is 3780509. The next prime is 3780521. The reversal of 3780520 is 250873.

It can be written as a sum of positive squares in 2 ways, for example, as 3694084 + 86436 = 1922^2 + 294^2 .

It is not an unprimeable number, because it can be changed into a prime (3780521) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 47217 + ... + 47296.

Almost surely, 2^3780520 is an apocalyptic number.

It is an amenable number.

3780520 is an abundant number, since it is smaller than the sum of its proper divisors (4725740).

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

3780520 is a wasteful number, since it uses less digits than its factorization.

3780520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94524 (or 94520 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 3780520 is about 1944.3559344935. The cubic root of 3780520 is about 155.7819658416.

The spelling of 3780520 in words is "three million, seven hundred eighty thousand, five hundred twenty".