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1438212 = 223119851
BaseRepresentation
bin101011111001000000100
32201001212010
411133020010
5332010322
650454220
715140016
oct5371004
92631763
101438212
118a2606
12594370
133b4819
142961b6
151d620c
hex15f204

1438212 has 12 divisors (see below), whose sum is σ = 3355856. Its totient is φ = 479400.

The previous prime is 1438211. The next prime is 1438223. The reversal of 1438212 is 2128341.

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1438211) 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, 59914 + ... + 59937.

21438212 is an apocalyptic number.

1438212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1438212 is an abundant number, since it is smaller than the sum of its proper divisors (1917644).

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

1438212 is a wasteful number, since it uses less digits than its factorization.

1438212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119858 (or 119856 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 1438212 is about 1199.2547685959. The cubic root of 1438212 is about 112.8775659852.

It can be divided in two parts, 14 and 38212, that added together give a triangular number (38226 = T276).

The spelling of 1438212 in words is "one million, four hundred thirty-eight thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 119851 239702 359553 479404 719106 1438212