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2087620 = 225104381
BaseRepresentation
bin111111101101011000100
310221001200021
413331223010
51013300440
6112424524
723513233
oct7755304
93831607
102087620
1111a6507
12848144
135812a2
143c4b1a
152b384a
hex1fdac4

2087620 has 12 divisors (see below), whose sum is σ = 4384044. Its totient is φ = 835040.

The previous prime is 2087593. The next prime is 2087627. The reversal of 2087620 is 267802.

It can be written as a sum of positive squares in 2 ways, for example, as 1119364 + 968256 = 1058^2 + 984^2 .

It is not an unprimeable number, because it can be changed into a prime (2087627) 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 3 ways as a sum of consecutive naturals, for example, 52171 + ... + 52210.

It is an arithmetic number, because the mean of its divisors is an integer number (365337).

22087620 is an apocalyptic number.

2087620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2087620 is an abundant number, since it is smaller than the sum of its proper divisors (2296424).

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

2087620 is a wasteful number, since it uses less digits than its factorization.

2087620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104390 (or 104388 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 2087620 is about 1444.8598547956. The cubic root of 2087620 is about 127.8057764032.

The spelling of 2087620 in words is "two million, eighty-seven thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 104381 208762 417524 521905 1043810 2087620