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BaseRepresentation
bin111100111100011100010
310202110101221
413213203202
51002401101
6110445254
722655143
oct7474342
93673357
101997026
111144439
1280382a
1354bc95
1439daca
15296aa1
hex1e78e2

1997026 has 4 divisors (see below), whose sum is σ = 2995542. Its totient is φ = 998512.

The previous prime is 1997003. The next prime is 1997029. The reversal of 1997026 is 6207991.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1962801 + 34225 = 1401^2 + 185^2 .

It is a super-2 number, since 2×19970262 = 7976225689352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1996982 and 1997000.

It is not an unprimeable number, because it can be changed into a prime (1997029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499255 + ... + 499258.

21997026 is an apocalyptic number.

1997026 is a deficient number, since it is larger than the sum of its proper divisors (998516).

1997026 is an equidigital number, since it uses as much as digits as its factorization.

1997026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998515.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 1997026 is about 1413.1617034154. The cubic root of 1997026 is about 125.9296239228.

It can be divided in two parts, 199 and 7026, that added together give a square (7225 = 852).

The spelling of 1997026 in words is "one million, nine hundred ninety-seven thousand, twenty-six".

Divisors: 1 2 998513 1997026