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1231472 = 24116997
BaseRepresentation
bin100101100101001110000
32022120021002
410230221300
5303401342
642221132
713316204
oct4545160
92276232
101231472
11771250
124b47a8
133416a8
14240b04
15194d32
hex12ca70

1231472 has 20 divisors (see below), whose sum is σ = 2603256. Its totient is φ = 559680.

The previous prime is 1231469. The next prime is 1231481. The reversal of 1231472 is 2741321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3323 + ... + 3674.

21231472 is an apocalyptic number.

It is an amenable number.

1231472 is an abundant number, since it is smaller than the sum of its proper divisors (1371784).

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

1231472 is a wasteful number, since it uses less digits than its factorization.

1231472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7016 (or 7010 counting only the distinct ones).

The product of its digits is 336, while the sum is 20.

The square root of 1231472 is about 1109.7170810617. The cubic root of 1231472 is about 107.1868514355.

Adding to 1231472 its reverse (2741321), we get a palindrome (3972793).

The spelling of 1231472 in words is "one million, two hundred thirty-one thousand, four hundred seventy-two".

Divisors: 1 2 4 8 11 16 22 44 88 176 6997 13994 27988 55976 76967 111952 153934 307868 615736 1231472