Base | Representation |
---|---|
bin | 110000100101010… |
… | …000101011010001 |
3 | 2002210201001022222 |
4 | 300211100223101 |
5 | 3132124332001 |
6 | 212513510425 |
7 | 26125005020 |
oct | 6045205321 |
9 | 2083631288 |
10 | 815074001 |
11 | 3890a7185 |
12 | 1a8b72415 |
13 | ccb30111 |
14 | 7a3708b7 |
15 | 4b85361b |
hex | 30950ad1 |
815074001 has 4 divisors (see below), whose sum is σ = 931513152. Its totient is φ = 698634852.
The previous prime is 815073949. The next prime is 815074003. The reversal of 815074001 is 100470518.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 815074001 - 26 = 815073937 is a prime.
It is a super-2 number, since 2×8150740012 = 1328691254212296002, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (815074003) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58219565 + ... + 58219578.
It is an arithmetic number, because the mean of its divisors is an integer number (232878288).
Almost surely, 2815074001 is an apocalyptic number.
It is an amenable number.
815074001 is a deficient number, since it is larger than the sum of its proper divisors (116439151).
815074001 is a wasteful number, since it uses less digits than its factorization.
815074001 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 116439150.
The product of its (nonzero) digits is 1120, while the sum is 26.
The square root of 815074001 is about 28549.5008888071. The cubic root of 815074001 is about 934.1121337949.
The spelling of 815074001 in words is "eight hundred fifteen million, seventy-four thousand, one".
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