Base | Representation |
---|---|
bin | 10001111010001111… |
… | …101000101110000000 |
3 | 1211122020010021102012 |
4 | 101322033220232000 |
5 | 303341040212410 |
6 | 12500130312052 |
7 | 1250362001501 |
oct | 217217505600 |
9 | 54566107365 |
10 | 19230788480 |
11 | 8179308022 |
12 | 3888428628 |
13 | 1a762148a7 |
14 | d06092ba8 |
15 | 778476605 |
hex | 47a3e8b80 |
19230788480 has 128 divisors (see below), whose sum is σ = 47407356000. Its totient is φ = 7454121984.
The previous prime is 19230788429. The next prime is 19230788491. The reversal of 19230788480 is 8488703291.
It is a tau number, because it is divible by the number of its divisors (128).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6368411 + ... + 6371429.
Almost surely, 219230788480 is an apocalyptic number.
19230788480 is a gapful number since it is divisible by the number (10) 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 19230788480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23703678000).
19230788480 is an abundant number, since it is smaller than the sum of its proper divisors (28176567520).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
19230788480 is a wasteful number, since it uses less digits than its factorization.
19230788480 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3344 (or 3332 counting only the distinct ones).
The product of its (nonzero) digits is 774144, while the sum is 50.
The spelling of 19230788480 in words is "nineteen billion, two hundred thirty million, seven hundred eighty-eight thousand, four hundred eighty".
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