3505780 has 24 divisors (see below), whose sum is σ = 7489440. Its totient is φ = 1378080.

The previous prime is 3505771. The next prime is 3505793. The reversal of 3505780 is 875053.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306 + ... + 2665.

It is an arithmetic number, because the mean of its divisors is an integer number (312060).

Almost surely, 2^3505780 is an apocalyptic number.

It is an amenable number.

3505780 is an abundant number, since it is smaller than the sum of its proper divisors (3983660).

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

3505780 is a wasteful number, since it uses less digits than its factorization.

3505780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3039 (or 3037 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 3505780 is about 1872.3728261220. The cubic root of 3505780 is about 151.9129811244.

The spelling of 3505780 in words is "three million, five hundred five thousand, seven hundred eighty".