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30780463 = 723414663
BaseRepresentation
bin111010101101…
…0110000101111
32010220210212011
41311122300233
530334433323
63015422051
7522425650
oct165326057
963823764
1030780463
11164138aa
12a384927
1364b92bc
144133527
152a8020d
hex1d5ac2f

30780463 has 16 divisors (see below), whose sum is σ = 37610496. Its totient is φ = 24615360.

The previous prime is 30780443. The next prime is 30780473. The reversal of 30780463 is 36408703.

It is not a de Polignac number, because 30780463 - 29 = 30779951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30780413) 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, 4270 + ... + 8932.

It is an arithmetic number, because the mean of its divisors is an integer number (2350656).

Almost surely, 230780463 is an apocalyptic number.

30780463 is a deficient number, since it is larger than the sum of its proper divisors (6830033).

30780463 is a wasteful number, since it uses less digits than its factorization.

30780463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4734.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 30780463 is about 5548.0143294696. The cubic root of 30780463 is about 313.3947494168.

The spelling of 30780463 in words is "thirty million, seven hundred eighty thousand, four hundred sixty-three".

Divisors: 1 7 23 41 161 287 943 4663 6601 32641 107249 191183 750743 1338281 4397209 30780463