3545820 has 36 divisors (see below), whose sum is σ = 10756200. Its totient is φ = 945504.

The previous prime is 3545819. The next prime is 3545831. The reversal of 3545820 is 285453.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9670 + ... + 10029.

Almost surely, 2^3545820 is an apocalyptic number.

3545820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3545820 is an abundant number, since it is smaller than the sum of its proper divisors (7210380).

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

3545820 is a wasteful number, since it uses less digits than its factorization.

3545820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19714 (or 19709 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 3545820 is about 1883.0347845964. The cubic root of 3545820 is about 152.4891329711.

The spelling of 3545820 in words is "three million, five hundred forty-five thousand, eight hundred twenty".