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30541242 = 237964433
BaseRepresentation
bin111010010000…
…0010110111010
32010110122201010
41310200112322
530304304432
63010334350
7520411344
oct164402672
963418633
1030541242
11162700a6
12a28a3b6
136434454
1440b0294
152a343cc
hex1d205ba

30541242 has 16 divisors (see below), whose sum is σ = 61856640. Its totient is φ = 10051392.

The previous prime is 30541237. The next prime is 30541249. The reversal of 30541242 is 24214503.

It is not an unprimeable number, because it can be changed into a prime (30541249) 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, 31743 + ... + 32690.

It is an arithmetic number, because the mean of its divisors is an integer number (3866040).

Almost surely, 230541242 is an apocalyptic number.

30541242 is an abundant number, since it is smaller than the sum of its proper divisors (31315398).

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

30541242 is a wasteful number, since it uses less digits than its factorization.

30541242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64517.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 30541242 is about 5526.4131224511. The cubic root of 30541242 is about 312.5807518248.

Adding to 30541242 its reverse (24214503), we get a palindrome (54755745).

The spelling of 30541242 in words is "thirty million, five hundred forty-one thousand, two hundred forty-two".

Divisors: 1 2 3 6 79 158 237 474 64433 128866 193299 386598 5090207 10180414 15270621 30541242