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30291268 = 2271636637
BaseRepresentation
bin111001110001…
…1010101000100
32002222221210211
41303203111010
530223310033
63001125204
7515320510
oct163432504
962887724
1030291268
111610a307
12a189804
136377737
144047140
1529d52cd
hex1ce3544

30291268 has 24 divisors (see below), whose sum is σ = 60963392. Its totient is φ = 12900384.

The previous prime is 30291241. The next prime is 30291269. The reversal of 30291268 is 86219203.

It is not an unprimeable number, because it can be changed into a prime (30291269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1246 + ... + 7882.

Almost surely, 230291268 is an apocalyptic number.

It is an amenable number.

30291268 is an abundant number, since it is smaller than the sum of its proper divisors (30672124).

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

30291268 is a wasteful number, since it uses less digits than its factorization.

30291268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6811 (or 6809 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 30291268 is about 5503.7503577106. The cubic root of 30291268 is about 311.7256107197.

The spelling of 30291268 in words is "thirty million, two hundred ninety-one thousand, two hundred sixty-eight".

Divisors: 1 2 4 7 14 28 163 326 652 1141 2282 4564 6637 13274 26548 46459 92918 185836 1081831 2163662 4327324 7572817 15145634 30291268