3143920 has 40 divisors (see below), whose sum is σ = 7874496. Its totient is φ = 1160448.

The previous prime is 3143897. The next prime is 3143953. The reversal of 3143920 is 293413.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 3143891 and 3143900.

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, 472 + ... + 2551.

Almost surely, 2^3143920 is an apocalyptic number.

It is an amenable number.

3143920 is an abundant number, since it is smaller than the sum of its proper divisors (4730576).

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

3143920 is a wasteful number, since it uses less digits than its factorization.

3143920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3049 (or 3043 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 3143920 is about 1773.1102616589. The cubic root of 3143920 is about 146.4953463326.

The spelling of 3143920 in words is "three million, one hundred forty-three thousand, nine hundred twenty".