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202012019 = 11101349521
BaseRepresentation
bin11000000101001…
…11010101110011
3112002010021101122
430002213111303
5403203341034
632013452455
75002034216
oct1402472563
9462107348
10202012019
11a4037690
12577a112b
1332b10051
141cb8777d
1512b0562e
hexc0a7573

202012019 has 16 divisors (see below), whose sum is σ = 223624800. Its totient is φ = 180960000.

The previous prime is 202012007. The next prime is 202012039. The reversal of 202012019 is 910210202.

202012019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 202012019 - 28 = 202011763 is a prime.

It is a super-2 number, since 2×2020120192 = 81617711640912722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202011988 and 202012006.

It is not an unprimeable number, because it can be changed into a prime (202012039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387479 + ... + 387999.

It is an arithmetic number, because the mean of its divisors is an integer number (13976550).

Almost surely, 2202012019 is an apocalyptic number.

202012019 is a deficient number, since it is larger than the sum of its proper divisors (21612781).

202012019 is a wasteful number, since it uses less digits than its factorization.

202012019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 202012019 is about 14213.0932242070. The cubic root of 202012019 is about 586.7580677510.

The spelling of 202012019 in words is "two hundred two million, twelve thousand, nineteen".

Divisors: 1 11 101 349 521 1111 3839 5731 35249 52621 181829 387739 578831 2000119 18364729 202012019