Base | Representation |
---|---|
bin | 11001010011010… |
… | …11010111111101 |
3 | 112210101112020000 |
4 | 30221223113331 |
5 | 413314032112 |
6 | 33021144513 |
7 | 5155053645 |
oct | 1451532775 |
9 | 483345200 |
10 | 212252157 |
11 | a98a1207 |
12 | 5b0bb139 |
13 | 34c86cc0 |
14 | 20291525 |
15 | 139797dc |
hex | ca6b5fd |
212252157 has 80 divisors (see below), whose sum is σ = 368831232. Its totient is φ = 120476160.
The previous prime is 212252147. The next prime is 212252167. The reversal of 212252157 is 751252212.
It is an interprime number because it is at equal distance from previous prime (212252147) and next prime (212252167).
It is not a de Polignac number, because 212252157 - 212 = 212248061 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (27).
212252157 is a Rhonda number in base 10.
Its product of digits (2800) is a multiple of the sum of its prime factors (280).
It is a self number, because there is not a number n which added to its sum of digits gives 212252157.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (212252137) by changing a digit.
It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1270888 + ... + 1271054.
Almost surely, 2212252157 is an apocalyptic number.
212252157 is a gapful number since it is divisible by the number (27) formed by its first and last digit.
It is an amenable number.
212252157 is a deficient number, since it is larger than the sum of its proper divisors (156579075).
212252157 is a wasteful number, since it uses less digits than its factorization.
212252157 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 280 (or 271 counting only the distinct ones).
The product of its digits is 2800, while the sum is 27.
The square root of 212252157 is about 14568.8763121937. The cubic root of 212252157 is about 596.5095084914.
The spelling of 212252157 in words is "two hundred twelve million, two hundred fifty-two thousand, one hundred fifty-seven".
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