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30814485 = 3513198317
BaseRepresentation
bin111010110001…
…1000100010101
32010222112112020
41311203010111
530342030420
63020243353
7522630102
oct165430425
963875466
1030814485
1116437419
12a3a0559
1364cb930
144141aa9
152a8a340
hex1d63115

30814485 has 32 divisors (see below), whose sum is σ = 55896960. Its totient is φ = 14370048.

The previous prime is 30814481. The next prime is 30814499. The reversal of 30814485 is 58441803.

It is not a de Polignac number, because 30814485 - 22 = 30814481 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30814481) 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, 454 + ... + 7863.

It is an arithmetic number, because the mean of its divisors is an integer number (1746780).

Almost surely, 230814485 is an apocalyptic number.

It is an amenable number.

30814485 is a deficient number, since it is larger than the sum of its proper divisors (25082475).

30814485 is a wasteful number, since it uses less digits than its factorization.

30814485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8357.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 30814485 is about 5551.0796247217. The cubic root of 30814485 is about 313.5101731753.

The spelling of 30814485 in words is "thirty million, eight hundred fourteen thousand, four hundred eighty-five".

Divisors: 1 3 5 13 15 19 39 57 65 95 195 247 285 741 1235 3705 8317 24951 41585 108121 124755 158023 324363 474069 540605 790115 1621815 2054299 2370345 6162897 10271495 30814485