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30384534 = 23191791489
BaseRepresentation
bin111001111101…
…0000110010110
32010011200202010
41303322012112
530234301114
63003125050
7516156435
oct163720626
963150663
1030384534
1116173394
12a213786
1363ab01b
14406d11c
152a02c59
hex1cfa196

30384534 has 32 divisors (see below), whose sum is σ = 64368000. Its totient is φ = 9535104.

The previous prime is 30384503. The next prime is 30384577. The reversal of 30384534 is 43548303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19662 + ... + 21150.

It is an arithmetic number, because the mean of its divisors is an integer number (2011500).

Almost surely, 230384534 is an apocalyptic number.

30384534 is an abundant number, since it is smaller than the sum of its proper divisors (33983466).

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

30384534 is a wasteful number, since it uses less digits than its factorization.

30384534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 30384534 is about 5512.2167954463. The cubic root of 30384534 is about 312.0452145189.

It can be divided in two parts, 30384 and 534, that multiplied together give a triangular number (16225056 = T5696).

The spelling of 30384534 in words is "thirty million, three hundred eighty-four thousand, five hundred thirty-four".

Divisors: 1 2 3 6 19 38 57 114 179 358 537 1074 1489 2978 3401 4467 6802 8934 10203 20406 28291 56582 84873 169746 266531 533062 799593 1599186 5064089 10128178 15192267 30384534