3705140 has 24 divisors (see below), whose sum is σ = 7910952. Its totient is φ = 1457280.

The previous prime is 3705137. The next prime is 3705161. The reversal of 3705140 is 415073.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 163216 + 3541924 = 404^2 + 1882^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 299 + ... + 2738.

It is an arithmetic number, because the mean of its divisors is an integer number (329623).

Almost surely, 2^3705140 is an apocalyptic number.

It is an amenable number.

3705140 is an abundant number, since it is smaller than the sum of its proper divisors (4205812).

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

3705140 is a wasteful number, since it uses less digits than its factorization.

3705140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3107 (or 3105 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 3705140 is about 1924.8740218518. The cubic root of 3705140 is about 154.7396252929.

The spelling of 3705140 in words is "three million, seven hundred five thousand, one hundred forty".