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30513086 = 237412339
BaseRepresentation
bin111010001100…
…1011110111110
32010102020002022
41310121132332
530302404321
63010000142
7520233302
oct164313676
963366068
1030513086
1116250a2a
12a276052
1364246a6
1440a3d02
152a2adab
hex1d197be

30513086 has 8 divisors (see below), whose sum is σ = 47006760. Its totient is φ = 14844168.

The previous prime is 30513047. The next prime is 30513097. The reversal of 30513086 is 68031503.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 206096 + ... + 206243.

It is an arithmetic number, because the mean of its divisors is an integer number (5875845).

Almost surely, 230513086 is an apocalyptic number.

30513086 is a deficient number, since it is larger than the sum of its proper divisors (16493674).

30513086 is a wasteful number, since it uses less digits than its factorization.

30513086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412378.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 30513086 is about 5523.8651323145. The cubic root of 30513086 is about 312.4846661276.

Adding to 30513086 its reverse (68031503), we get a palindrome (98544589).

The spelling of 30513086 in words is "thirty million, five hundred thirteen thousand, eighty-six".

Divisors: 1 2 37 74 412339 824678 15256543 30513086