6923840 has 112 divisors (see below), whose sum is σ = 20628864. Its totient is φ = 2150400.

The previous prime is 6923821. The next prime is 6923869. The reversal of 6923840 is 483296.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 6923797 and 6923806.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24500 + ... + 24780.

Almost surely, 2^6923840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6923840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10314432).

6923840 is an abundant number, since it is smaller than the sum of its proper divisors (13705024).

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

6923840 is a wasteful number, since it uses less digits than its factorization.

6923840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 6923840 is about 2631.3190608514. The cubic root of 6923840 is about 190.5968305593.

The spelling of 6923840 in words is "six million, nine hundred twenty-three thousand, eight hundred forty".