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30103030 = 2519473371
BaseRepresentation
bin111001011010…
…1010111110110
32002122101121001
41302311113312
530201244110
62553113514
7513604636
oct162652766
962571531
1030103030
1115aa0941
12a0b889a
13630cb59
143dd86c6
15299963a
hex1cb55f6

30103030 has 32 divisors (see below), whose sum is σ = 58268160. Its totient is φ = 11161440.

The previous prime is 30103027. The next prime is 30103037. The reversal of 30103030 is 3030103.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an alternating number because its digits alternate between odd and even.

30103030 is a modest number, since divided by 3030 gives 3010 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 30102998 and 30103016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30103037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7245 + ... + 10615.

It is an arithmetic number, because the mean of its divisors is an integer number (1820880).

Almost surely, 230103030 is an apocalyptic number.

30103030 is a deficient number, since it is larger than the sum of its proper divisors (28165130).

30103030 is a wasteful number, since it uses less digits than its factorization.

30103030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3444.

The product of its (nonzero) digits is 27, while the sum is 10.

The square root of 30103030 is about 5486.6228228301. The cubic root of 30103030 is about 311.0785532350.

Adding to 30103030 its reverse (3030103), we get a palindrome (33133133).

The spelling of 30103030 in words is "thirty million, one hundred three thousand, thirty".

Divisors: 1 2 5 10 19 38 47 94 95 190 235 470 893 1786 3371 4465 6742 8930 16855 33710 64049 128098 158437 316874 320245 640490 792185 1584370 3010303 6020606 15051515 30103030