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30074454 = 23219471871
BaseRepresentation
bin111001010111…
…0011001010110
32002120221101200
41302232121112
530144340304
62552333330
7513425424
oct162563126
962527350
1030074454
1115a81423
12a0a4246
1362ccb47
143dcc114
152990e39
hex1cae656

30074454 has 48 divisors (see below), whose sum is σ = 70087680. Its totient is φ = 9290160.

The previous prime is 30074441. The next prime is 30074459. The reversal of 30074454 is 45447003.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30074459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15139 + ... + 17009.

It is an arithmetic number, because the mean of its divisors is an integer number (1460160).

Almost surely, 230074454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30074454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35043840).

30074454 is an abundant number, since it is smaller than the sum of its proper divisors (40013226).

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

30074454 is a wasteful number, since it uses less digits than its factorization.

30074454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1945 (or 1942 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 30074454 is about 5484.0180524867. The cubic root of 30074454 is about 310.9800892262.

The spelling of 30074454 in words is "thirty million, seventy-four thousand, four hundred fifty-four".

Divisors: 1 2 3 6 9 18 19 38 47 57 94 114 141 171 282 342 423 846 893 1786 1871 2679 3742 5358 5613 8037 11226 16074 16839 33678 35549 71098 87937 106647 175874 213294 263811 319941 527622 639882 791433 1582866 1670803 3341606 5012409 10024818 15037227 30074454