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1397706 = 231771193
BaseRepresentation
bin101010101001111001010
32122000021220
411111033022
5324211311
645542510
714610642
oct5251712
92560256
101397706
11875132
12574a36
1339c25b
14285522
151c9206
hex1553ca

1397706 has 32 divisors (see below), whose sum is σ = 3017088. Its totient is φ = 430080.

The previous prime is 1397681. The next prime is 1397717. The reversal of 1397706 is 6077931.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7146 + ... + 7338.

It is an arithmetic number, because the mean of its divisors is an integer number (94284).

21397706 is an apocalyptic number.

1397706 is an abundant number, since it is smaller than the sum of its proper divisors (1619382).

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

1397706 is a wasteful number, since it uses less digits than its factorization.

1397706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286.

The product of its (nonzero) digits is 7938, while the sum is 33.

The square root of 1397706 is about 1182.2461672596. The cubic root of 1397706 is about 111.8077590799.

The spelling of 1397706 in words is "one million, three hundred ninety-seven thousand, seven hundred six".

Divisors: 1 2 3 6 17 34 51 71 102 142 193 213 386 426 579 1158 1207 2414 3281 3621 6562 7242 9843 13703 19686 27406 41109 82218 232951 465902 698853 1397706