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212868701 = 1491428649
BaseRepresentation
bin11001011000000…
…01111001011101
3112211112211221222
430230001321131
5413443244301
633042303125
75163232313
oct1454017135
9484484858
10212868701
11aa182451
125b357aa5
1335141816
14203b20b3
1513a4c31b
hexcb01e5d

212868701 has 4 divisors (see below), whose sum is σ = 214297500. Its totient is φ = 211439904.

The previous prime is 212868673. The next prime is 212868727. The reversal of 212868701 is 107868212.

212868701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89680900 + 123187801 = 9470^2 + 11099^2 .

It is a cyclic number.

It is not a de Polignac number, because 212868701 - 218 = 212606557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212868301) 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, 714176 + ... + 714473.

It is an arithmetic number, because the mean of its divisors is an integer number (53574375).

Almost surely, 2212868701 is an apocalyptic number.

It is an amenable number.

212868701 is a deficient number, since it is larger than the sum of its proper divisors (1428799).

212868701 is a wasteful number, since it uses less digits than its factorization.

212868701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428798.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 212868701 is about 14590.0205962843. The cubic root of 212868701 is about 597.0865247426.

The spelling of 212868701 in words is "two hundred twelve million, eight hundred sixty-eight thousand, seven hundred one".

Divisors: 1 149 1428649 212868701