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2217048764 = 22779180313
BaseRepresentation
bin1000010000100101…
…0111101010111100
312201111202202011012
42010021113222330
514020031030024
61003555014352
7105640414010
oct20411275274
95644682135
102217048764
11a38514607
1251a59a3b8
13294420698
14170638540
15ce98850e
hex84257abc

2217048764 has 12 divisors (see below), whose sum is σ = 4434097584. Its totient is φ = 950163744.

The previous prime is 2217048689. The next prime is 2217048767. The reversal of 2217048764 is 4678407122.

It is a happy number.

2217048764 is an admirable number.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2217048767) 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, 39590129 + ... + 39590184.

It is an arithmetic number, because the mean of its divisors is an integer number (369508132).

Almost surely, 22217048764 is an apocalyptic number.

It is an amenable number.

2217048764 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2217048764 is a wasteful number, since it uses less digits than its factorization.

2217048764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79180324 (or 79180322 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 41.

The square root of 2217048764 is about 47085.5472942601. The cubic root of 2217048764 is about 1303.9424233112.

The spelling of 2217048764 in words is "two billion, two hundred seventeen million, forty-eight thousand, seven hundred sixty-four".

Divisors: 1 2 4 7 14 28 79180313 158360626 316721252 554262191 1108524382 2217048764