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2071630 = 251137509
BaseRepresentation
bin111111001110001001110
310220020202001
413321301032
51012243010
6112222514
723415511
oct7716116
93806661
102071630
1111954a0
1283aa3a
13576c22
143bcd78
152adc3a
hex1f9c4e

2071630 has 32 divisors (see below), whose sum is σ = 4186080. Its totient is φ = 731520.

The previous prime is 2071613. The next prime is 2071631. The reversal of 2071630 is 361702.

2071630 is a nontrivial binomial coefficient, being equal to C(2036, 2).

It is a junction number, because it is equal to n+sod(n) for n = 2071598 and 2071607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2071631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3816 + ... + 4324.

It is an arithmetic number, because the mean of its divisors is an integer number (130815).

22071630 is an apocalyptic number.

2071630 is the 2035-th triangular number and also the 1018-th hexagonal number.

2071630 is the 679-th centered nonagonal number.

2071630 is an abundant number, since it is smaller than the sum of its proper divisors (2114450).

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

2071630 is a wasteful number, since it uses less digits than its factorization.

2071630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 2071630 is about 1439.3158096818. The cubic root of 2071630 is about 127.4786328413.

It can be divided in two parts, 2071 and 630, that added together give a triangular number (2701 = T73).

The spelling of 2071630 in words is "two million, seventy-one thousand, six hundred thirty".

Divisors: 1 2 5 10 11 22 37 55 74 110 185 370 407 509 814 1018 2035 2545 4070 5090 5599 11198 18833 27995 37666 55990 94165 188330 207163 414326 1035815 2071630