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30914245 = 517367991
BaseRepresentation
bin111010111101…
…1011011000101
32011011121101001
41311323123011
530403223440
63022333301
7523523665
oct165733305
964147331
1030914245
11164a536a
12a42a231
13653516b
14416a1a5
152aa9b9a
hex1d7b6c5

30914245 has 16 divisors (see below), whose sum is σ = 39426048. Its totient is φ = 23189760.

The previous prime is 30914237. The next prime is 30914281. The reversal of 30914245 is 54241903.

It is not a de Polignac number, because 30914245 - 23 = 30914237 is a prime.

It is a super-3 number, since 3×309142453 (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30700 + ... + 31690.

It is an arithmetic number, because the mean of its divisors is an integer number (2464128).

Almost surely, 230914245 is an apocalyptic number.

It is an amenable number.

30914245 is a deficient number, since it is larger than the sum of its proper divisors (8511803).

30914245 is a wasteful number, since it uses less digits than its factorization.

30914245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 30914245 is about 5560.0580032946. The cubic root of 30914245 is about 313.8481320315.

The spelling of 30914245 in words is "thirty million, nine hundred fourteen thousand, two hundred forty-five".

Divisors: 1 5 17 85 367 991 1835 4955 6239 16847 31195 84235 363697 1818485 6182849 30914245