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1970208 = 25326841
BaseRepresentation
bin111100001000000100000
310201002121200
413201000200
51001021313
6110121200
722514022
oct7410040
93632550
101970208
111126279
127b0200
1353ca06
14394012
1528db73
hex1e1020

1970208 has 36 divisors (see below), whose sum is σ = 5603598. Its totient is φ = 656640.

The previous prime is 1970201. The next prime is 1970209. The reversal of 1970208 is 8020791.

It can be written as a sum of positive squares in only one way, i.e., 1468944 + 501264 = 1212^2 + 708^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (1970201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3133 + ... + 3708.

21970208 is an apocalyptic number.

1970208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1970208 is an abundant number, since it is smaller than the sum of its proper divisors (3633390).

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

1970208 is a wasteful number, since it uses less digits than its factorization.

1970208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6857 (or 6846 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1970208 is about 1403.6409797381. The cubic root of 1970208 is about 125.3633799498.

Adding to 1970208 its product of nonzero digits (1008), we get a square (1971216 = 14042).

Adding to 1970208 its reverse (8020791), we get a palindrome (9990999).

The spelling of 1970208 in words is "one million, nine hundred seventy thousand, two hundred eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 32 36 48 72 96 144 288 6841 13682 20523 27364 41046 54728 61569 82092 109456 123138 164184 218912 246276 328368 492552 656736 985104 1970208