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2131770 = 23571059
BaseRepresentation
bin1000001000011100111010
311000022020110
420020130322
51021204040
6113405150
724056034
oct10103472
94008213
102131770
1112266a3
128697b6
13598404
143d6c54
152c1980
hex20873a

2131770 has 16 divisors (see below), whose sum is σ = 5116320. Its totient is φ = 568464.

The previous prime is 2131721. The next prime is 2131771. The reversal of 2131770 is 771312.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2131771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35500 + ... + 35559.

It is an arithmetic number, because the mean of its divisors is an integer number (319770).

22131770 is an apocalyptic number.

2131770 is an abundant number, since it is smaller than the sum of its proper divisors (2984550).

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

2131770 is a wasteful number, since it uses less digits than its factorization.

2131770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71069.

The product of its (nonzero) digits is 294, while the sum is 21.

The square root of 2131770 is about 1460.0582180174. The cubic root of 2131770 is about 128.7004648102.

The spelling of 2131770 in words is "two million, one hundred thirty-one thousand, seven hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 71059 142118 213177 355295 426354 710590 1065885 2131770