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1992712 = 23249089
BaseRepresentation
bin111100110100000001000
310202020111011
413212200020
51002231322
6110413304
722636441
oct7464010
93666434
101992712
111141177
12801234
1354a027
1439c2c8
15295677
hex1e6808

1992712 has 8 divisors (see below), whose sum is σ = 3736350. Its totient is φ = 996352.

The previous prime is 1992691. The next prime is 1992713. The reversal of 1992712 is 2172991.

It can be written as a sum of positive squares in only one way, i.e., 1976836 + 15876 = 1406^2 + 126^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×19927122 = 7941802229888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1992713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124537 + ... + 124552.

21992712 is an apocalyptic number.

It is an amenable number.

1992712 is a deficient number, since it is larger than the sum of its proper divisors (1743638).

1992712 is a wasteful number, since it uses less digits than its factorization.

1992712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249095 (or 249091 counting only the distinct ones).

The product of its digits is 2268, while the sum is 31.

The square root of 1992712 is about 1411.6345136047. The cubic root of 1992712 is about 125.8388803114.

It can be divided in two parts, 1992 and 712, that added together give a square (2704 = 522).

The spelling of 1992712 in words is "one million, nine hundred ninety-two thousand, seven hundred twelve".

Divisors: 1 2 4 8 249089 498178 996356 1992712