3622840 has 32 divisors (see below), whose sum is σ = 8779680. Its totient is φ = 1337472.

The previous prime is 3622837. The next prime is 3622847. The reversal of 3622840 is 482263.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3622847) 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, 2964 + ... + 4003.

It is an arithmetic number, because the mean of its divisors is an integer number (274365).

Almost surely, 2^3622840 is an apocalyptic number.

It is an amenable number.

3622840 is an abundant number, since it is smaller than the sum of its proper divisors (5156840).

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

3622840 is a wasteful number, since it uses less digits than its factorization.

3622840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6991 (or 6987 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 3622840 is about 1903.3759481511. The cubic root of 3622840 is about 153.5853239378.

The spelling of 3622840 in words is "three million, six hundred twenty-two thousand, eight hundred forty".