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2132740 = 225106637
BaseRepresentation
bin1000001000101100000100
311000100120101
420020230010
51021221430
6113413444
724061621
oct10105404
94010511
102132740
1112273a5
1286a284
1359899c
143d7348
152c1dca
hex208b04

2132740 has 12 divisors (see below), whose sum is σ = 4478796. Its totient is φ = 853088.

The previous prime is 2132699. The next prime is 2132749. The reversal of 2132740 is 472312.

It can be written as a sum of positive squares in 2 ways, for example, as 1602756 + 529984 = 1266^2 + 728^2 .

It is not an unprimeable number, because it can be changed into a prime (2132749) 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, 53299 + ... + 53338.

It is an arithmetic number, because the mean of its divisors is an integer number (373233).

22132740 is an apocalyptic number.

2132740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2132740 is an abundant number, since it is smaller than the sum of its proper divisors (2346056).

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

2132740 is a wasteful number, since it uses less digits than its factorization.

2132740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106646 (or 106644 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 2132740 is about 1460.3903587740. The cubic root of 2132740 is about 128.7199823193.

It can be divided in two parts, 21 and 32740, that added together give a square (32761 = 1812).

The spelling of 2132740 in words is "two million, one hundred thirty-two thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 106637 213274 426548 533185 1066370 2132740