3651520 has 28 divisors (see below), whose sum is σ = 8695944. Its totient is φ = 1460480.

The previous prime is 3651497. The next prime is 3651539. The reversal of 3651520 is 251563.

It is a happy number.

3651520 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 3651491 and 3651500.

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 3 ways as a sum of consecutive naturals, for example, 5386 + ... + 6025.

Almost surely, 2^3651520 is an apocalyptic number.

It is an amenable number.

3651520 is an abundant number, since it is smaller than the sum of its proper divisors (5044424).

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

3651520 is a wasteful number, since it uses less digits than its factorization.

3651520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11428 (or 11418 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 3651520 is about 1910.8950782290. The cubic root of 3651520 is about 153.9895422145.

The spelling of 3651520 in words is "three million, six hundred fifty-one thousand, five hundred twenty".