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1999396 = 22721012
BaseRepresentation
bin111101000001000100100
310202120122201
413220020210
51002440041
6110504244
722665100
oct7501044
93676581
101999396
1111461a3
12805084
13550099
143a0900
15297631
hex1e8224

1999396 has 27 divisors (see below), whose sum is σ = 4110897. Its totient is φ = 848400.

The previous prime is 1999379. The next prime is 1999423. The reversal of 1999396 is 6939991.

The square root of 1999396 is 1414.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1920996 + 78400 = 1386^2 + 280^2 .

It is a zygodrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 19746 + ... + 19846.

21999396 is an apocalyptic number.

1999396 is the 1414-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1999396

1999396 is an abundant number, since it is smaller than the sum of its proper divisors (2111501).

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

1999396 is a wasteful number, since it uses less digits than its factorization.

1999396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 110 counting only the distinct ones).

The product of its digits is 118098, while the sum is 46.

The cubic root of 1999396 is about 125.9794205073.

The spelling of 1999396 in words is "one million, nine hundred ninety-nine thousand, three hundred ninety-six".