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30089320 = 2351744249
BaseRepresentation
bin111001011001…
…0000001101000
32002121200210021
41302302001220
530200324240
62552530224
7513516652
oct162620150
962550707
1030089320
1115a91608
12a0b0974
136306841
143dd36d2
15299554a
hex1cb2068

30089320 has 32 divisors (see below), whose sum is σ = 71685000. Its totient is φ = 11327488.

The previous prime is 30089309. The next prime is 30089321. The reversal of 30089320 is 2398003.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19027044 + 11062276 = 4362^2 + 3326^2 .

It is not an unprimeable number, because it can be changed into a prime (30089321) 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, 21445 + ... + 22804.

Almost surely, 230089320 is an apocalyptic number.

It is an amenable number.

30089320 is an abundant number, since it is smaller than the sum of its proper divisors (41595680).

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

30089320 is a wasteful number, since it uses less digits than its factorization.

30089320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44277 (or 44273 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 30089320 is about 5485.3732780915. The cubic root of 30089320 is about 311.0313206188.

The spelling of 30089320 in words is "thirty million, eighty-nine thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 17 20 34 40 68 85 136 170 340 680 44249 88498 176996 221245 353992 442490 752233 884980 1504466 1769960 3008932 3761165 6017864 7522330 15044660 30089320