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2087772 = 223173981
BaseRepresentation
bin111111101101101011100
310221001212220
413331231130
51013302042
6112425340
723513541
oct7755534
93831786
102087772
1111a6635
12848250
1358138b
143c4bc8
152b38ec
hex1fdb5c

2087772 has 12 divisors (see below), whose sum is σ = 4871496. Its totient is φ = 695920.

The previous prime is 2087759. The next prime is 2087773. The reversal of 2087772 is 2777802.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2087773) 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, 86979 + ... + 87002.

It is an arithmetic number, because the mean of its divisors is an integer number (405958).

22087772 is an apocalyptic number.

It is an amenable number.

2087772 is an abundant number, since it is smaller than the sum of its proper divisors (2783724).

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

2087772 is a wasteful number, since it uses less digits than its factorization.

2087772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173988 (or 173986 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 33.

The square root of 2087772 is about 1444.9124540954. The cubic root of 2087772 is about 127.8088781820.

The spelling of 2087772 in words is "two million, eighty-seven thousand, seven hundred seventy-two".

Divisors: 1 2 3 4 6 12 173981 347962 521943 695924 1043886 2087772