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213076887 = 3193738191
BaseRepresentation
bin11001011001101…
…00101110010111
3112211221102112120
430230310232113
5414021430022
633050551023
75165060262
oct1454645627
9484842476
10213076887
11aa304901
125b438473
13351b54ca
1420427cd9
1513a8dd5c
hexcb34b97

213076887 has 8 divisors (see below), whose sum is σ = 299055360. Its totient is φ = 134574840.

The previous prime is 213076883. The next prime is 213076889. The reversal of 213076887 is 788670312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213076887 - 22 = 213076883 is a prime.

It is a super-2 number, since 2×2130768872 = 90803519547221538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213076883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1869039 + ... + 1869152.

It is an arithmetic number, because the mean of its divisors is an integer number (37381920).

Almost surely, 2213076887 is an apocalyptic number.

213076887 is a deficient number, since it is larger than the sum of its proper divisors (85978473).

213076887 is a wasteful number, since it uses less digits than its factorization.

213076887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3738213.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 213076887 is about 14597.1533868765. The cubic root of 213076887 is about 597.2811119117.

The spelling of 213076887 in words is "two hundred thirteen million, seventy-six thousand, eight hundred eighty-seven".

Divisors: 1 3 19 57 3738191 11214573 71025629 213076887