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1970 = 25197
BaseRepresentation
bin11110110010
32200222
4132302
530340
613042
75513
oct3662
92628
101970
111531
121182
13b87
14a0a
158b5
hex7b2

1970 has 8 divisors (see below), whose sum is σ = 3564. Its totient is φ = 784.

The previous prime is 1951. The next prime is 1973. The reversal of 1970 is 791.

1970 is nontrivially palindromic in base 14.

It can be written as a sum of positive squares in 2 ways, for example, as 1849 + 121 = 43^2 + 11^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a magnanimous number.

1970 is an undulating number in base 14.

It is a nialpdrome in base 13.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (1973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89 + ... + 108.

1970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1970 is a deficient number, since it is larger than the sum of its proper divisors (1594).

1970 is a wasteful number, since it uses less digits than its factorization.

1970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204.

The product of its (nonzero) digits is 63, while the sum is 17.

The square root of 1970 is about 44.3846820423. The cubic root of 1970 is about 12.5358968148.

Subtracting from 1970 its sum of digits (17), we obtain a triangular number (1953 = T62).

The spelling of 1970 in words is "one thousand, nine hundred seventy".

Divisors: 1 2 5 10 197 394 985 1970