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30213230220 = 223251087154417
BaseRepresentation
bin11100001000110110…
…010100111010001100
32212222121112010020200
4130020312110322030
5443334041331340
621514010213500
72116466135205
oct341066247214
985877463220
1030213230220
11118a4643058
125a32424290
132b06602324
1416688b25ac
15bbc6e8330
hex708d94e8c

30213230220 has 72 divisors (see below), whose sum is σ = 91731704064. Its totient is φ = 8049397248.

The previous prime is 30213230219. The next prime is 30213230227. The reversal of 30213230220 is 2203231203.

It is a happy number.

30213230220 is a `hidden beast` number, since 3 + 0 + 213 + 230 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 30213230193 and 30213230202.

It is not an unprimeable number, because it can be changed into a prime (30213230227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118452 + ... + 272868.

Almost surely, 230213230220 is an apocalyptic number.

30213230220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30213230220 is an abundant number, since it is smaller than the sum of its proper divisors (61518473844).

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

30213230220 is a wasteful number, since it uses less digits than its factorization.

30213230220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155519 (or 155514 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 30213230220 its reverse (2203231203), we get a palindrome (32416461423).

The spelling of 30213230220 in words is "thirty billion, two hundred thirteen million, two hundred thirty thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 1087 2174 3261 4348 5435 6522 9783 10870 13044 16305 19566 21740 32610 39132 48915 65220 97830 154417 195660 308834 463251 617668 772085 926502 1389753 1544170 1853004 2316255 2779506 3088340 4632510 5559012 6948765 9265020 13897530 27795060 167851279 335702558 503553837 671405116 839256395 1007107674 1510661511 1678512790 2014215348 2517769185 3021323022 3357025580 5035538370 6042646044 7553307555 10071076740 15106615110 30213230220