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30001244 = 2271382421
BaseRepresentation
bin111001001110…
…0100001011100
32002110012222012
41302130201130
530140014434
62551010352
7513002120
oct162344134
962405865
1030001244
1115a31419
12a0699b8
1362a5720
143dad580
1529793ce
hex1c9c85c

30001244 has 24 divisors (see below), whose sum is σ = 64618848. Its totient is φ = 11868480.

The previous prime is 30001241. The next prime is 30001249. The reversal of 30001244 is 44210003.

30001244 = 1862 + 1872 + ... + 4582.

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 (30001241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40847 + ... + 41574.

It is an arithmetic number, because the mean of its divisors is an integer number (2692452).

Almost surely, 230001244 is an apocalyptic number.

It is an amenable number.

30001244 is an abundant number, since it is smaller than the sum of its proper divisors (34617604).

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

30001244 is a wasteful number, since it uses less digits than its factorization.

30001244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82445 (or 82443 counting only the distinct ones).

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

The square root of 30001244 is about 5477.3391350180. The cubic root of 30001244 is about 310.7275454218.

Adding to 30001244 its reverse (44210003), we get a palindrome (74211247).

The spelling of 30001244 in words is "thirty million, one thousand, two hundred forty-four".

Divisors: 1 2 4 7 13 14 26 28 52 91 182 364 82421 164842 329684 576947 1071473 1153894 2142946 2307788 4285892 7500311 15000622 30001244