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1972012 = 22770429
BaseRepresentation
bin111100001011100101100
310201012002111
413201130230
51001101022
6110133404
722522210
oct7413454
93635074
101972012
111127669
127b1264
13540793
14394940
1528e477
hex1e172c

1972012 has 12 divisors (see below), whose sum is σ = 3944080. Its totient is φ = 845136.

The previous prime is 1972007. The next prime is 1972013. The reversal of 1972012 is 2102791.

1972012 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35187 + ... + 35242.

21972012 is an apocalyptic number.

It is an amenable number.

1972012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1972012 is a wasteful number, since it uses less digits than its factorization.

1972012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70440 (or 70438 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 1972012 is about 1404.2834471715. The cubic root of 1972012 is about 125.4016308260.

It can be divided in two parts, 197 and 2012, that added together give a square (2209 = 472).

The spelling of 1972012 in words is "one million, nine hundred seventy-two thousand, twelve".

Divisors: 1 2 4 7 14 28 70429 140858 281716 493003 986006 1972012