Base | Representation |
---|---|
bin | 100111100100… |
… | …0001000001000 |
3 | 1110000211120211 |
4 | 1033020020020 |
5 | 20302231124 |
6 | 2020330504 |
7 | 341211145 |
oct | 117101010 |
9 | 43024524 |
10 | 20742664 |
11 | 107882a8 |
12 | 6b43a34 |
13 | 43b3487 |
14 | 2a7d3cc |
15 | 1c4ae94 |
hex | 13c8208 |
20742664 has 16 divisors (see below), whose sum is σ = 39474000. Its totient is φ = 10216272.
The previous prime is 20742653. The next prime is 20742677. The reversal of 20742664 is 46624702.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18814 + ... + 19885.
It is an arithmetic number, because the mean of its divisors is an integer number (2467125).
Almost surely, 220742664 is an apocalyptic number.
It is an amenable number.
20742664 is a deficient number, since it is larger than the sum of its proper divisors (18731336).
20742664 is a wasteful number, since it uses less digits than its factorization.
20742664 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 38772 (or 38768 counting only the distinct ones).
The product of its (nonzero) digits is 16128, while the sum is 31.
The square root of 20742664 is about 4554.4114877775. The cubic root of 20742664 is about 274.7608455225.
The spelling of 20742664 in words is "twenty million, seven hundred forty-two thousand, six hundred sixty-four".
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