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2019241 = 74292
BaseRepresentation
bin111101100111110101001
310210120212201
413230332221
51004103431
6111140201
723110000
oct7547651
93716781
102019241
11115a0a4
12814661
13559123
143a7c37
1529d461
hex1ecfa9

2019241 has 15 divisors (see below), whose sum is σ = 2439671. Its totient is φ = 1671096.

The previous prime is 2019223. The next prime is 2019257. The reversal of 2019241 is 1429102.

The square root of 2019241 is 1421.

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., 1058841 + 960400 = 1029^2 + 980^2 .

It is not a de Polignac number, because 2019241 - 27 = 2019113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2019211) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 69615 + ... + 69643.

22019241 is an apocalyptic number.

2019241 is the 1421-st square number.

2019241 is the 711-st centered octagonal number.

It is an amenable number.

2019241 is a deficient number, since it is larger than the sum of its proper divisors (420430).

2019241 is an frugal number, since it uses more digits than its factorization.

2019241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The cubic root of 2019241 is about 126.3948518773.

Multiplying 2019241 by its product of nonzero digits (144), we get a square (290770704 = 170522).

The spelling of 2019241 in words is "two million, nineteen thousand, two hundred forty-one".

Divisors: 1 7 29 49 203 343 841 1421 2401 5887 9947 41209 69629 288463 2019241