3561920 has 28 divisors (see below), whose sum is σ = 8482584. Its totient is φ = 1424640.

The previous prime is 3561913. The next prime is 3561947. The reversal of 3561920 is 291653.

It is a self number, because there is not a number n which added to its sum of digits gives 3561920.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5246 + ... + 5885.

Almost surely, 2^3561920 is an apocalyptic number.

It is an amenable number.

3561920 is an abundant number, since it is smaller than the sum of its proper divisors (4920664).

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

3561920 is a wasteful number, since it uses less digits than its factorization.

3561920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11148 (or 11138 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 3561920 is about 1887.3049568101. The cubic root of 3561920 is about 152.7195797678.

The spelling of 3561920 in words is "three million, five hundred sixty-one thousand, nine hundred twenty".