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30102044 = 2271075073
BaseRepresentation
bin111001011010…
…1001000011100
32002122100020112
41302311020130
530201231134
62553105152
7513602030
oct162651034
962570215
1030102044
1115aa0125
12a0b81b8
13630c57b
143dd81c0
1529991ce
hex1cb521c

30102044 has 12 divisors (see below), whose sum is σ = 60204144. Its totient is φ = 12900864.

The previous prime is 30102031. The next prime is 30102047. The reversal of 30102044 is 44020103.

30102044 is an admirable number.

It is a super-2 number, since 2×301020442 = 1812266105955872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30102047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537509 + ... + 537564.

It is an arithmetic number, because the mean of its divisors is an integer number (5017012).

Almost surely, 230102044 is an apocalyptic number.

It is an amenable number.

30102044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

30102044 is a wasteful number, since it uses less digits than its factorization.

30102044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075084 (or 1075082 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 30102044 is about 5486.5329671843. The cubic root of 30102044 is about 311.0751568239.

Adding to 30102044 its reverse (44020103), we get a palindrome (74122147).

The spelling of 30102044 in words is "thirty million, one hundred two thousand, forty-four".

Divisors: 1 2 4 7 14 28 1075073 2150146 4300292 7525511 15051022 30102044