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2869218940 = 225748742083
BaseRepresentation
bin1010101100000100…
…1100111001111100
321101221221102110011
42223001030321330
521334010001230
61152413153004
7131046646540
oct25301147174
97357842404
102869218940
111242665725
12680a8b764
133695843b3
141d30c1a20
1511bd5de2a
hexab04ce7c

2869218940 has 48 divisors (see below), whose sum is σ = 6900429312. Its totient is φ = 981688896.

The previous prime is 2869218931. The next prime is 2869218941. The reversal of 2869218940 is 498129682.

2869218940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2869218941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47139 + ... + 89221.

It is an arithmetic number, because the mean of its divisors is an integer number (143758944).

Almost surely, 22869218940 is an apocalyptic number.

2869218940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2869218940 is an abundant number, since it is smaller than the sum of its proper divisors (4031210372).

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

2869218940 is a wasteful number, since it uses less digits than its factorization.

2869218940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42586 (or 42584 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 2869218940 is about 53565.0906841387. The cubic root of 2869218940 is about 1420.9797741257.

The spelling of 2869218940 in words is "two billion, eight hundred sixty-nine million, two hundred eighteen thousand, nine hundred forty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 487 974 1948 2435 3409 4870 6818 9740 13636 17045 34090 42083 68180 84166 168332 210415 294581 420830 589162 841660 1178324 1472905 2945810 5891620 20494421 40988842 81977684 102472105 143460947 204944210 286921894 409888420 573843788 717304735 1434609470 2869218940