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30299769 = 329373593
BaseRepresentation
bin111001110010…
…1011001111001
32010000101110200
41303211121321
530224043034
63001232413
7515354343
oct163453171
963011420
1030299769
1116115735
12a192709
13637b576
14404a293
1529d7a99
hex1ce5679

30299769 has 12 divisors (see below), whose sum is σ = 43825236. Its totient is φ = 20172672.

The previous prime is 30299767. The next prime is 30299807. The reversal of 30299769 is 96799203.

It can be written as a sum of positive squares in 2 ways, for example, as 4928400 + 25371369 = 2220^2 + 5037^2 .

It is not a de Polignac number, because 30299769 - 21 = 30299767 is a prime.

It is a super-2 number, since 2×302997692 = 1836152002906722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (30299761) 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, 6637 + ... + 10229.

It is an arithmetic number, because the mean of its divisors is an integer number (3652103).

Almost surely, 230299769 is an apocalyptic number.

It is an amenable number.

30299769 is a deficient number, since it is larger than the sum of its proper divisors (13525467).

30299769 is a wasteful number, since it uses less digits than its factorization.

30299769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4536 (or 4533 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 45.

The square root of 30299769 is about 5504.5225951030. The cubic root of 30299769 is about 311.7547690849.

The spelling of 30299769 in words is "thirty million, two hundred ninety-nine thousand, seven hundred sixty-nine".

Divisors: 1 3 9 937 2811 3593 8433 10779 32337 3366641 10099923 30299769