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30446430 = 2357144983
BaseRepresentation
bin111010000100…
…1001101011110
32010021211122120
41310021031132
530243241210
63004323410
7516535050
oct164111536
963254576
1030446430
1116205943
12a243566
136400251
1440878d0
152a16270
hex1d0935e

30446430 has 32 divisors (see below), whose sum is σ = 83510784. Its totient is φ = 6959136.

The previous prime is 30446407. The next prime is 30446441. The reversal of 30446430 is 3464403.

It is a self number, because there is not a number n which added to its sum of digits gives 30446430.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72282 + ... + 72701.

It is an arithmetic number, because the mean of its divisors is an integer number (2609712).

Almost surely, 230446430 is an apocalyptic number.

30446430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30446430 is an abundant number, since it is smaller than the sum of its proper divisors (53064354).

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

30446430 is a wasteful number, since it uses less digits than its factorization.

30446430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145000.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 30446430 is about 5517.8283771788. The cubic root of 30446430 is about 312.2569587614.

It can be divided in two parts, 30446 and 430, that added together give a triangular number (30876 = T248).

The spelling of 30446430 in words is "thirty million, four hundred forty-six thousand, four hundred thirty".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 210 144983 289966 434949 724915 869898 1014881 1449830 2029762 2174745 3044643 4349490 5074405 6089286 10148810 15223215 30446430