6730020 has 144 divisors (see below), whose sum is σ = 23237760. Its totient is φ = 1615680.

The previous prime is 6729991. The next prime is 6730033. The reversal of 6730020 is 200376.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6729975 and 6730002.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65289 + ... + 65391.

Almost surely, 2^6730020 is an apocalyptic number.

6730020 is a gapful number since it is divisible by the number (60) 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 6730020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11618880).

6730020 is an abundant number, since it is smaller than the sum of its proper divisors (16507740).

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

6730020 is a wasteful number, since it uses less digits than its factorization.

6730020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 6730020 is about 2594.2282089284. The cubic root of 6730020 is about 188.8015048836.

Adding to 6730020 its reverse (200376), we get a palindrome (6930396).

The spelling of 6730020 in words is "six million, seven hundred thirty thousand, twenty".