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1880072 = 23235009
BaseRepresentation
bin111001011000000001000
310112111222022
413023000020
5440130242
6104144012
721660155
oct7130010
93474868
101880072
111074587
12768008
1350a98c
1436d22c
152720d2
hex1cb008

1880072 has 8 divisors (see below), whose sum is σ = 3525150. Its totient is φ = 940032.

The previous prime is 1880027. The next prime is 1880093. The reversal of 1880072 is 2700881.

It can be written as a sum of positive squares in only one way, i.e., 1503076 + 376996 = 1226^2 + 614^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117497 + ... + 117512.

21880072 is an apocalyptic number.

It is an amenable number.

1880072 is a deficient number, since it is larger than the sum of its proper divisors (1645078).

1880072 is a wasteful number, since it uses less digits than its factorization.

1880072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235015 (or 235011 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 1880072 is about 1371.1571755273. The cubic root of 1880072 is about 123.4216914114.

The spelling of 1880072 in words is "one million, eight hundred eighty thousand, seventy-two".

Divisors: 1 2 4 8 235009 470018 940036 1880072