3545020 has 36 divisors (see below), whose sum is σ = 7872984. Its totient is φ = 1340640.

The previous prime is 3544987. The next prime is 3545021. The reversal of 3545020 is 205453.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3545021) 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 11 ways as a sum of consecutive naturals, for example, 6975 + ... + 7465.

It is an arithmetic number, because the mean of its divisors is an integer number (218694).

Almost surely, 2^3545020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3545020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3936492).

3545020 is an abundant number, since it is smaller than the sum of its proper divisors (4327964).

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

3545020 is a wasteful number, since it uses less digits than its factorization.

3545020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538 (or 517 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 3545020 is about 1882.8223495593. The cubic root of 3545020 is about 152.4776640224.

The spelling of 3545020 in words is "three million, five hundred forty-five thousand, twenty".