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30486250 = 254293
BaseRepresentation
bin111010001001…
…0111011101010
32010100212021101
41310102323222
530301030000
63005232014
7520062124
oct164227352
963325241
1030486250
1116232853
12a26260a
136415402
144098214
152a22e6a
hex1d12eea

30486250 has 40 divisors (see below), whose sum is σ = 59184180. Its totient is φ = 11774000.

The previous prime is 30486217. The next prime is 30486251. The reversal of 30486250 is 5268403.

It can be written as a sum of positive squares in 10 ways, for example, as 10870209 + 19616041 = 3297^2 + 4429^2 .

It is a super-2 number, since 2×304862502 = 1858822878125000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30486251) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1051236 + ... + 1051264.

Almost surely, 230486250 is an apocalyptic number.

30486250 is a deficient number, since it is larger than the sum of its proper divisors (28697930).

30486250 is an frugal number, since it uses more digits than its factorization.

30486250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 30486250 is about 5521.4355017513. The cubic root of 30486250 is about 312.3930300546.

The spelling of 30486250 in words is "thirty million, four hundred eighty-six thousand, two hundred fifty".

Divisors: 1 2 5 10 25 29 50 58 125 145 250 290 625 725 841 1250 1450 1682 3625 4205 7250 8410 18125 21025 24389 36250 42050 48778 105125 121945 210250 243890 525625 609725 1051250 1219450 3048625 6097250 15243125 30486250