3211940 has 24 divisors (see below), whose sum is σ = 6911352. Its totient is φ = 1253120.

The previous prime is 3211939. The next prime is 3211979. The reversal of 3211940 is 491123.

It can be written as a sum of positive squares in 4 ways, for example, as 135424 + 3076516 = 368^2 + 1754^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1139 + ... + 2778.

It is an arithmetic number, because the mean of its divisors is an integer number (287973).

Almost surely, 2^3211940 is an apocalyptic number.

It is an amenable number.

3211940 is an abundant number, since it is smaller than the sum of its proper divisors (3699412).

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

3211940 is a wasteful number, since it uses less digits than its factorization.

3211940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3967 (or 3965 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 3211940 is about 1792.1886061461. The cubic root of 3211940 is about 147.5443130288.

The spelling of 3211940 in words is "three million, two hundred eleven thousand, nine hundred forty".