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2018972 = 221313853
BaseRepresentation
bin111101100111010011100
310210120111202
413230322130
51004101342
6111135032
723106134
oct7547234
93716452
102018972
11115997a
12814478
13558c77
143a7ac4
1529d332
hex1ece9c

2018972 has 12 divisors (see below), whose sum is σ = 3561096. Its totient is φ = 1001520.

The previous prime is 2018957. The next prime is 2018981. The reversal of 2018972 is 2798102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 1403 + ... + 2450.

It is an arithmetic number, because the mean of its divisors is an integer number (296758).

22018972 is an apocalyptic number.

It is an amenable number.

2018972 is a deficient number, since it is larger than the sum of its proper divisors (1542124).

2018972 is a wasteful number, since it uses less digits than its factorization.

2018972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3988 (or 3986 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 2018972 is about 1420.9053451937. The cubic root of 2018972 is about 126.3892389226.

The spelling of 2018972 in words is "two million, eighteen thousand, nine hundred seventy-two".

Divisors: 1 2 4 131 262 524 3853 7706 15412 504743 1009486 2018972