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30344769 = 3272136779
BaseRepresentation
bin111001111000…
…0011001000001
32010002200012100
41303300121001
530232013034
63002221013
7515632500
oct163603101
963080170
1030344769
1116146524
12a1b4769
136395bb0
14405c837
1529e6099
hex1cf0641

30344769 has 72 divisors (see below), whose sum is σ = 56434560. Its totient is φ = 15567552.

The previous prime is 30344749. The next prime is 30344771. The reversal of 30344769 is 96744303.

It is not a de Polignac number, because 30344769 - 25 = 30344737 is a prime.

It is a super-2 number, since 2×303447692 = 1841610011326722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30344749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 384072 + ... + 384150.

Almost surely, 230344769 is an apocalyptic number.

30344769 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

30344769 is a deficient number, since it is larger than the sum of its proper divisors (26089791).

30344769 is a wasteful number, since it uses less digits than its factorization.

30344769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 30344769 is about 5508.6086265045. The cubic root of 30344769 is about 311.9090279644.

It can be divided in two parts, 30344 and 769, that added together give a palindrome (31113).

The spelling of 30344769 in words is "thirty million, three hundred forty-four thousand, seven hundred sixty-nine".

Divisors: 1 3 7 9 13 21 39 49 63 67 79 91 117 147 201 237 273 441 469 553 603 637 711 819 871 1027 1407 1659 1911 2613 3081 3283 3871 4221 4977 5293 5733 6097 7189 7839 9243 9849 11613 15879 18291 21567 29547 34839 37051 42679 47637 50323 54873 64701 68809 111153 128037 150969 206427 259357 333459 384111 452907 481663 619281 778071 1444989 2334213 3371641 4334967 10114923 30344769