Search a number
-
+
6920704 = 2971931
BaseRepresentation
bin11010011001101000000000
3111000121102101
4122121220000
53232430304
6404200144
7112552660
oct32315000
914017371
106920704
1139a769a
122399054
1315840bb
14cc21a0
1591a8a4
hex699a00

6920704 has 40 divisors (see below), whose sum is σ = 15811488. Its totient is φ = 2964480.

The previous prime is 6920681. The next prime is 6920707. The reversal of 6920704 is 4070296.

It is a super-2 number, since 2×69207042 = 95792287711232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (6920707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2619 + ... + 4549.

Almost surely, 26920704 is an apocalyptic number.

6920704 is a gapful number since it is divisible by the number (64) 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 6920704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7905744).

6920704 is an abundant number, since it is smaller than the sum of its proper divisors (8890784).

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

6920704 is an equidigital number, since it uses as much as digits as its factorization.

6920704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1956 (or 1940 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 6920704 is about 2630.7230945122. The cubic root of 6920704 is about 190.5680506759.

The spelling of 6920704 in words is "six million, nine hundred twenty thousand, seven hundred four".

Divisors: 1 2 4 7 8 14 16 28 32 56 64 112 128 224 256 448 512 896 1792 1931 3584 3862 7724 13517 15448 27034 30896 54068 61792 108136 123584 216272 247168 432544 494336 865088 988672 1730176 3460352 6920704