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30231470 = 2519159113
BaseRepresentation
bin111001101010…
…0101110101110
32002212220210002
41303110232232
530214401340
62555544302
7514651253
oct163245656
962786702
1030231470
1116079395
12a15b092
136356459
14402d42a
1529c2715
hex1cd4bae

30231470 has 16 divisors (see below), whose sum is σ = 57281040. Its totient is φ = 11456064.

The previous prime is 30231469. The next prime is 30231493. The reversal of 30231470 is 7413203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79367 + ... + 79746.

It is an arithmetic number, because the mean of its divisors is an integer number (3580065).

Almost surely, 230231470 is an apocalyptic number.

30231470 is a deficient number, since it is larger than the sum of its proper divisors (27049570).

30231470 is a wasteful number, since it uses less digits than its factorization.

30231470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159139.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 30231470 is about 5498.3151964943. The cubic root of 30231470 is about 311.5203497222.

Adding to 30231470 its reverse (7413203), we get a palindrome (37644673).

The spelling of 30231470 in words is "thirty million, two hundred thirty-one thousand, four hundred seventy".

Divisors: 1 2 5 10 19 38 95 190 159113 318226 795565 1591130 3023147 6046294 15115735 30231470