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30225520 = 2451329063
BaseRepresentation
bin111001101001…
…1010001110000
32002212121121201
41303103101300
530214204040
62555500544
7514625023
oct163232160
962777551
1030225520
1116074976
12a157754
136353830
14402b1ba
1529c0a9a
hex1cd3470

30225520 has 40 divisors (see below), whose sum is σ = 75682656. Its totient is φ = 11159808.

The previous prime is 30225493. The next prime is 30225521. The reversal of 30225520 is 2552203.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30225521) 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, 13492 + ... + 15571.

Almost surely, 230225520 is an apocalyptic number.

It is an amenable number.

30225520 is an abundant number, since it is smaller than the sum of its proper divisors (45457136).

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

30225520 is a wasteful number, since it uses less digits than its factorization.

30225520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29089 (or 29083 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 30225520 is about 5497.7740950316. The cubic root of 30225520 is about 311.4999111120.

Adding to 30225520 its reverse (2552203), we get a palindrome (32777723).

The spelling of 30225520 in words is "thirty million, two hundred twenty-five thousand, five hundred twenty".

Divisors: 1 2 4 5 8 10 13 16 20 26 40 52 65 80 104 130 208 260 520 1040 29063 58126 116252 145315 232504 290630 377819 465008 581260 755638 1162520 1511276 1889095 2325040 3022552 3778190 6045104 7556380 15112760 30225520