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2087730 = 232523197
BaseRepresentation
bin111111101101100110010
310221001211100
413331230302
51013301410
6112425230
723513451
oct7755462
93831740
102087730
1111a65a7
12848216
13581358
143c4b98
152b38c0
hex1fdb32

2087730 has 24 divisors (see below), whose sum is σ = 5428332. Its totient is φ = 556704.

The previous prime is 2087717. The next prime is 2087741. The reversal of 2087730 is 377802.

It can be written as a sum of positive squares in 2 ways, for example, as 1766241 + 321489 = 1329^2 + 567^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2087694 and 2087703.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11509 + ... + 11688.

22087730 is an apocalyptic number.

2087730 is an abundant number, since it is smaller than the sum of its proper divisors (3340602).

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

2087730 is a wasteful number, since it uses less digits than its factorization.

2087730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23210 (or 23207 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 2087730 is about 1444.8979202698. The cubic root of 2087730 is about 127.8080211266.

The spelling of 2087730 in words is "two million, eighty-seven thousand, seven hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 23197 46394 69591 115985 139182 208773 231970 347955 417546 695910 1043865 2087730