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30012201 = 3713723
BaseRepresentation
bin111001001111…
…1001100101001
32002110210000000
41302133030221
530140342301
62551133213
7513046062
oct162371451
962423000
1030012201
1115a3967a
12a074209
1362aa6cb
143db3569
15297c786
hex1c9f329

30012201 has 16 divisors (see below), whose sum is σ = 45014720. Its totient is φ = 20006676.

The previous prime is 30012173. The next prime is 30012211. The reversal of 30012201 is 10221003.

It is a happy number.

It is not a de Polignac number, because 30012201 - 223 = 21623593 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30012211) 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, 4675 + ... + 9048.

It is an arithmetic number, because the mean of its divisors is an integer number (2813420).

Almost surely, 230012201 is an apocalyptic number.

It is an amenable number.

30012201 is a deficient number, since it is larger than the sum of its proper divisors (15002519).

30012201 is an frugal number, since it uses more digits than its factorization.

30012201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13744 (or 13726 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 30012201 is about 5478.3392556504. The cubic root of 30012201 is about 310.7653686014.

Adding to 30012201 its reverse (10221003), we get a palindrome (40233204).

The spelling of 30012201 in words is "thirty million, twelve thousand, two hundred one".

Divisors: 1 3 9 27 81 243 729 2187 13723 41169 123507 370521 1111563 3334689 10004067 30012201