3642940 has 24 divisors (see below), whose sum is σ = 8743392. Its totient is φ = 1248960.

The previous prime is 3642931. The next prime is 3642941. The reversal of 3642940 is 492463.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 3642899 and 3642908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3642941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12871 + ... + 13150.

It is an arithmetic number, because the mean of its divisors is an integer number (364308).

Almost surely, 2^3642940 is an apocalyptic number.

It is an amenable number.

3642940 is an abundant number, since it is smaller than the sum of its proper divisors (5100452).

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

3642940 is a wasteful number, since it uses less digits than its factorization.

3642940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26037 (or 26035 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 3642940 is about 1908.6487366721. The cubic root of 3642940 is about 153.8688375527.

The spelling of 3642940 in words is "three million, six hundred forty-two thousand, nine hundred forty".