Base | Representation |
---|---|
bin | 1000101011111… |
… | …00010010001010 |
3 | 12002002201020112 |
4 | 10111330102022 |
5 | 122123021220 |
6 | 11121354322 |
7 | 1543210121 |
oct | 425742212 |
9 | 162081215 |
10 | 72860810 |
11 | 38145450 |
12 | 204989a2 |
13 | 12130a09 |
14 | 9968ab8 |
15 | 65e35c5 |
hex | 457c48a |
72860810 has 64 divisors (see below), whose sum is σ = 154897920. Its totient is φ = 24376320.
The previous prime is 72860797. The next prime is 72860833. The reversal of 72860810 is 1806827.
It is a super-2 number, since 2×728608102 = 10617395267712200, which contains 22 as substring.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87476 + ... + 88304.
It is an arithmetic number, because the mean of its divisors is an integer number (2420280).
Almost surely, 272860810 is an apocalyptic number.
72860810 is an abundant number, since it is smaller than the sum of its proper divisors (82037110).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
72860810 is a wasteful number, since it uses less digits than its factorization.
72860810 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 911.
The product of its (nonzero) digits is 5376, while the sum is 32.
The square root of 72860810 is about 8535.8543802012. The cubic root of 72860810 is about 417.6681240488.
The spelling of 72860810 in words is "seventy-two million, eight hundred sixty thousand, eight hundred ten".
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