3505972 has 12 divisors (see below), whose sum is σ = 6301540.
Its totient is φ = 1705536.
The previous prime is 3505969. The next prime is 3505973. The reversal of 3505972 is 2795053.
It is a happy number.
It can be written as a sum of positive squares in 2 ways, for example, as 1449616 + 2056356 = 1204^2 + 1434^2
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (3505973) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11697 + ... + 11992.
Almost surely, 23505972 is an apocalyptic number.
It is an amenable number.
3505972 is a deficient number, since it is larger than the sum of its proper divisors (2795568).
3505972 is a wasteful number, since it uses less digits than its factorization.
3505972 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 23730 (or 23728 counting only the distinct ones).
The product of its (nonzero) digits is 9450, while the sum is 31.
The square root of 3505972 is about 1872.4240972600.
The cubic root of 3505972 is about 151.9157543313.
The spelling of 3505972 in words is "three million, five hundred five thousand, nine hundred seventy-two".