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4720870 = 257116131
BaseRepresentation
bin10010000000100011100110
322212211211001
4102000203212
52202031440
6245103514
755061320
oct22004346
98784731
104720870
112734950
1216b7b9a
13c93a1b
148ac610
15633b9a
hex4808e6

4720870 has 32 divisors (see below), whose sum is σ = 10596096. Its totient is φ = 1471200.

The previous prime is 4720853. The next prime is 4720871. The reversal of 4720870 is 780274.

4720870 = T660 + T661 + ... + T680.

It is a super-2 number, since 2×47208702 = 44573227113800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4720871) 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, 2296 + ... + 3835.

It is an arithmetic number, because the mean of its divisors is an integer number (331128).

Almost surely, 24720870 is an apocalyptic number.

4720870 is an abundant number, since it is smaller than the sum of its proper divisors (5875226).

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

4720870 is a wasteful number, since it uses less digits than its factorization.

4720870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6156.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 4720870 is about 2172.7563139938. The cubic root of 4720870 is about 167.7544362105.

It can be divided in two parts, 47208 and 70, that added together give a triangular number (47278 = T307).

The spelling of 4720870 in words is "four million, seven hundred twenty thousand, eight hundred seventy".

Divisors: 1 2 5 7 10 11 14 22 35 55 70 77 110 154 385 770 6131 12262 30655 42917 61310 67441 85834 134882 214585 337205 429170 472087 674410 944174 2360435 4720870