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BaseRepresentation
bin11010101100111111000000
3111011122012021
4122230333000
53243000000
6410011224
7113333110
oct32547700
914148167
107000000
113a51227
122416b14
1315b1217
14d03040
1593411a
hex6acfc0

7000000 has 98 divisors (see below), whose sum is σ = 19843496. Its totient is φ = 2400000.

The previous prime is 6999997. The next prime is 7000003. The reversal of 7000000 is 7.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6999997) and next prime (7000003).

It is a sliding number, since 7000000 = 2000000 + 5000000 and 1/2000000 + 1/5000000 = 0.0000007000000.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7000003) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 999997 + ... + 1000003.

Almost surely, 27000000 is an apocalyptic number.

7000000 is a gapful number since it is divisible by the number (70) 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 7000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9921748).

7000000 is an abundant number, since it is smaller than the sum of its proper divisors (12843496).

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

7000000 is an frugal number, since it uses more digits than its factorization.

7000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49 (or 14 counting only the distinct ones).

The product of its (nonzero) digits is 7, while the sum is 7.

The square root of 7000000 is about 2645.7513110646. The cubic root of 7000000 is about 191.2931182772.

The spelling of 7000000 in words is "seven million", and thus it is an aban number and an uban number.