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30101420 = 2252951899
BaseRepresentation
bin111001011010…
…0111110101100
32002122022101102
41302310332230
530201221140
62553102232
7513600146
oct162647654
962568342
1030101420
1115a9a708
12a0b7978
13630c1bb
143dd7c96
152998e15
hex1cb4fac

30101420 has 24 divisors (see below), whose sum is σ = 65394000. Its totient is φ = 11625152.

The previous prime is 30101399. The next prime is 30101429. The reversal of 30101420 is 2410103.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (30101429) 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, 25370 + ... + 26529.

It is an arithmetic number, because the mean of its divisors is an integer number (2724750).

Almost surely, 230101420 is an apocalyptic number.

It is an amenable number.

30101420 is an abundant number, since it is smaller than the sum of its proper divisors (35292580).

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

30101420 is a wasteful number, since it uses less digits than its factorization.

30101420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51937 (or 51935 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 30101420 is about 5486.4761003763. The cubic root of 30101420 is about 311.0730073326.

Adding to 30101420 its reverse (2410103), we get a palindrome (32511523).

The spelling of 30101420 in words is "thirty million, one hundred one thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 29 58 116 145 290 580 51899 103798 207596 259495 518990 1037980 1505071 3010142 6020284 7525355 15050710 30101420