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30022240 = 255187639
BaseRepresentation
bin111001010000…
…1101001100000
32002111021202211
41302201221200
530141202430
62551251504
7513120253
oct162415140
962437684
1030022240
1115a46176
12a079b94
1362b2151
143db709a
15298072a
hex1ca1a60

30022240 has 24 divisors (see below), whose sum is σ = 70927920. Its totient is φ = 12008832.

The previous prime is 30022189. The next prime is 30022253. The reversal of 30022240 is 4222003.

It is a self number, because there is not a number n which added to its sum of digits gives 30022240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93660 + ... + 93979.

It is an arithmetic number, because the mean of its divisors is an integer number (2955330).

Almost surely, 230022240 is an apocalyptic number.

It is an amenable number.

30022240 is an abundant number, since it is smaller than the sum of its proper divisors (40905680).

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

30022240 is a wasteful number, since it uses less digits than its factorization.

30022240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187654 (or 187646 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 30022240 is about 5479.2554238692. The cubic root of 30022240 is about 310.8000147969.

Adding to 30022240 its reverse (4222003), we get a palindrome (34244243).

The spelling of 30022240 in words is "thirty million, twenty-two thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 187639 375278 750556 938195 1501112 1876390 3002224 3752780 6004448 7505560 15011120 30022240