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30201270 = 23511711289
BaseRepresentation
bin111001100110…
…1010110110110
32002211101100120
41303031112312
530212420040
62555152410
7514464231
oct163152666
962741316
1030201270
1116058730
12a145706
136345798
144022418
1529b87d0
hex1ccd5b6

30201270 has 64 divisors (see below), whose sum is σ = 80248320. Its totient is φ = 7212800.

The previous prime is 30201263. The next prime is 30201271. The reversal of 30201270 is 7210203.

It is a super-2 number, since 2×302012702 = 1824233419225800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30201271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22786 + ... + 24074.

It is an arithmetic number, because the mean of its divisors is an integer number (1253880).

Almost surely, 230201270 is an apocalyptic number.

30201270 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30201270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40124160).

30201270 is an abundant number, since it is smaller than the sum of its proper divisors (50047050).

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

30201270 is a wasteful number, since it uses less digits than its factorization.

30201270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 30201270 is about 5495.5682144797. The cubic root of 30201270 is about 311.4165831394.

Adding to 30201270 its reverse (7210203), we get a palindrome (37411473).

The spelling of 30201270 in words is "thirty million, two hundred one thousand, two hundred seventy".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 71 110 142 165 213 330 355 426 710 781 1065 1289 1562 2130 2343 2578 3867 3905 4686 6445 7734 7810 11715 12890 14179 19335 23430 28358 38670 42537 70895 85074 91519 141790 183038 212685 274557 425370 457595 549114 915190 1006709 1372785 2013418 2745570 3020127 5033545 6040254 10067090 15100635 30201270