3205140 has 24 divisors (see below), whose sum is σ = 8974560. Its totient is φ = 854688.

The previous prime is 3205087. The next prime is 3205141. The reversal of 3205140 is 415023.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3205141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26650 + ... + 26769.

It is an arithmetic number, because the mean of its divisors is an integer number (373940).

Almost surely, 2^3205140 is an apocalyptic number.

3205140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3205140 is an abundant number, since it is smaller than the sum of its proper divisors (5769420).

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

3205140 is a wasteful number, since it uses less digits than its factorization.

3205140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53431 (or 53429 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 3205140 is about 1790.2904792240. The cubic root of 3205140 is about 147.4401174137.

It can be divided in two parts, 320 and 5140, that added together give a triangular number (5460 = T₁₀₄).

The spelling of 3205140 in words is "three million, two hundred five thousand, one hundred forty".