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30486120 = 2335736293
BaseRepresentation
bin111010001001…
…0111001101000
32010100212002120
41310102321220
530301023440
63005231240
7520061550
oct164227150
963325076
1030486120
1116232745
12a262520
136415332
144098160
152a22dd0
hex1d12e68

30486120 has 64 divisors (see below), whose sum is σ = 104526720. Its totient is φ = 6968064.

The previous prime is 30486091. The next prime is 30486121. The reversal of 30486120 is 2168403.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (30486121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17307 + ... + 18986.

It is an arithmetic number, because the mean of its divisors is an integer number (1633230).

Almost surely, 230486120 is an apocalyptic number.

30486120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30486120 is an abundant number, since it is smaller than the sum of its proper divisors (74040600).

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

30486120 is a wasteful number, since it uses less digits than its factorization.

30486120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36314 (or 36310 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 30486120 is about 5521.4237294379. The cubic root of 30486120 is about 312.3925860167.

The spelling of 30486120 in words is "thirty million, four hundred eighty-six thousand, one hundred twenty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 28 30 35 40 42 56 60 70 84 105 120 140 168 210 280 420 840 36293 72586 108879 145172 181465 217758 254051 290344 362930 435516 508102 544395 725860 762153 871032 1016204 1088790 1270255 1451720 1524306 2032408 2177580 2540510 3048612 3810765 4355160 5081020 6097224 7621530 10162040 15243060 30486120