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4917388780 = 225245869439
BaseRepresentation
bin1001001010001100…
…10110010111101100
3110200200221020021101
410211012112113230
540032322420110
62131540412444
7232600054303
oct44506262754
913620836241
104917388780
1120a3812a77
12b529a7124
136049c5b05
1434911943a
151dba8913a
hex1251965ec

4917388780 has 12 divisors (see below), whose sum is σ = 10326516480. Its totient is φ = 1966955504.

The previous prime is 4917388769. The next prime is 4917388783. The reversal of 4917388780 is 878837194.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (4917388783) 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, 122934700 + ... + 122934739.

It is an arithmetic number, because the mean of its divisors is an integer number (860543040).

Almost surely, 24917388780 is an apocalyptic number.

It is an amenable number.

4917388780 is an abundant number, since it is smaller than the sum of its proper divisors (5409127700).

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

4917388780 is a wasteful number, since it uses less digits than its factorization.

4917388780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245869448 (or 245869446 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 55.

The square root of 4917388780 is about 70124.0955734903. The cubic root of 4917388780 is about 1700.5060523433.

The spelling of 4917388780 in words is "four billion, nine hundred seventeen million, three hundred eighty-eight thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 245869439 491738878 983477756 1229347195 2458694390 4917388780