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30022020 = 22325723827
BaseRepresentation
bin111001010000…
…1100110000100
32002111021110200
41302201212010
530141201040
62551250500
7513116520
oct162414604
962437420
1030022020
1115a45a96
12a079a30
1362b2012
143db6d80
152980630
hex1ca1984

30022020 has 72 divisors (see below), whose sum is σ = 104080704. Its totient is φ = 6861888.

The previous prime is 30022007. The next prime is 30022067. The reversal of 30022020 is 2022003.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a junction number, because it is equal to n+sod(n) for n = 30021993 and 30022011.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10654 + ... + 13173.

Almost surely, 230022020 is an apocalyptic number.

30022020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30022020 is an abundant number, since it is smaller than the sum of its proper divisors (74058684).

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

30022020 is a wasteful number, since it uses less digits than its factorization.

30022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23849 (or 23844 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 30022020 is about 5479.2353481120. The cubic root of 30022020 is about 310.7992556245.

Adding to 30022020 its reverse (2022003), we get a palindrome (32044023).

The spelling of 30022020 in words is "thirty million, twenty-two thousand, twenty".

Divisors: 1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 28 30 35 36 42 45 60 63 70 84 90 105 126 140 180 210 252 315 420 630 1260 23827 47654 71481 95308 119135 142962 166789 214443 238270 285924 333578 357405 428886 476540 500367 667156 714810 833945 857772 1000734 1072215 1429620 1501101 1667890 2001468 2144430 2501835 3002202 3335780 4288860 5003670 6004404 7505505 10007340 15011010 30022020