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30422980 = 2257217307
BaseRepresentation
bin111010000001…
…1011111000100
32010020122111001
41310003133010
530242013410
63004023044
7516406510
oct164033704
963218431
1030422980
111619a265
12a231a84
1363c2683
14407d140
152a0e33a
hex1d037c4

30422980 has 24 divisors (see below), whose sum is σ = 73015488. Its totient is φ = 10430688.

The previous prime is 30422963. The next prime is 30422981. The reversal of 30422980 is 8922403.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (30422981) 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, 108514 + ... + 108793.

It is an arithmetic number, because the mean of its divisors is an integer number (3042312).

Almost surely, 230422980 is an apocalyptic number.

It is an amenable number.

30422980 is an abundant number, since it is smaller than the sum of its proper divisors (42592508).

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

30422980 is a wasteful number, since it uses less digits than its factorization.

30422980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217323 (or 217321 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 30422980 is about 5515.7030376916. The cubic root of 30422980 is about 312.1767708553.

The spelling of 30422980 in words is "thirty million, four hundred twenty-two thousand, nine hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 217307 434614 869228 1086535 1521149 2173070 3042298 4346140 6084596 7605745 15211490 30422980