1343920 has 40 divisors (see below), whose sum is σ = 3173904. Its totient is φ = 529152.

The previous prime is 1343917. The next prime is 1343941. The reversal of 1343920 is 293431.

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

It is a super-2 number, since 2×1343920² = 3612241932800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1343891 and 1343900.

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, 8482 + ... + 8638.

2^1343920 is an apocalyptic number.

1343920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1343920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1586952).

1343920 is an abundant number, since it is smaller than the sum of its proper divisors (1829984).

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

1343920 is a wasteful number, since it uses less digits than its factorization.

1343920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277 (or 271 counting only the distinct ones).

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

The square root of 1343920 is about 1159.2756359037. The cubic root of 1343920 is about 110.3547773894.

The spelling of 1343920 in words is "one million, three hundred forty-three thousand, nine hundred twenty".