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30026269 = 721347137
BaseRepresentation
bin111001010001…
…0101000011101
32002111111022001
41302202220131
530141320034
62551322301
7513135100
oct162425035
962444261
1030026269
1115a491a9
12a080391
1362b3c30
143db8737
152981a14
hex1ca2a1d

30026269 has 12 divisors (see below), whose sum is σ = 37616124. Its totient is φ = 23756544.

The previous prime is 30026263. The next prime is 30026273. The reversal of 30026269 is 96262003.

It can be written as a sum of positive squares in 2 ways, for example, as 1350244 + 28676025 = 1162^2 + 5355^2 .

It is not a de Polignac number, because 30026269 - 23 = 30026261 is a prime.

It is a super-2 number, since 2×300262692 = 1803153660120722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30026261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22932 + ... + 24205.

It is an arithmetic number, because the mean of its divisors is an integer number (3134677).

Almost surely, 230026269 is an apocalyptic number.

It is an amenable number.

30026269 is a deficient number, since it is larger than the sum of its proper divisors (7589855).

30026269 is a wasteful number, since it uses less digits than its factorization.

30026269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47164 (or 47157 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 30026269 is about 5479.6230709785. The cubic root of 30026269 is about 310.8139173488.

It can be divided in two parts, 300 and 26269, that added together give a square (26569 = 1632).

The spelling of 30026269 in words is "thirty million, twenty-six thousand, two hundred sixty-nine".

Divisors: 1 7 13 49 91 637 47137 329959 612781 2309713 4289467 30026269