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2680202820 = 223544670047
BaseRepresentation
bin1001111111000000…
…1010011001000100
320220210021102002010
42133300022121010
520442112442240
61121542014220
7123263230251
oct23760123104
96823242063
102680202820
1111559a5059
12629717370
13339374739
141b5d5c428
1510a474280
hex9fc0a644

2680202820 has 24 divisors (see below), whose sum is σ = 7504568064. Its totient is φ = 714720736.

The previous prime is 2680202807. The next prime is 2680202821. The reversal of 2680202820 is 282020862.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (2680202821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22334964 + ... + 22335083.

It is an arithmetic number, because the mean of its divisors is an integer number (312690336).

Almost surely, 22680202820 is an apocalyptic number.

2680202820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2680202820 is an abundant number, since it is smaller than the sum of its proper divisors (4824365244).

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

2680202820 is a wasteful number, since it uses less digits than its factorization.

2680202820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44670059 (or 44670057 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 2680202820 is about 51770.6752901679. The cubic root of 2680202820 is about 1389.0649509025.

The spelling of 2680202820 in words is "two billion, six hundred eighty million, two hundred two thousand, eight hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 44670047 89340094 134010141 178680188 223350235 268020282 446700470 536040564 670050705 893400940 1340101410 2680202820