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30470937 = 374193463
BaseRepresentation
bin111010000111…
…1001100011001
32010100002021020
41310033030121
530300032222
63005033053
7516666360
oct164171431
963302236
1030470937
11162222a2
12a255789
13640b453
1440927d7
152a1d65c
hex1d0f319

30470937 has 16 divisors (see below), whose sum is σ = 46556160. Its totient is φ = 17365392.

The previous prime is 30470911. The next prime is 30470959. The reversal of 30470937 is 73907403.

It is not a de Polignac number, because 30470937 - 26 = 30470873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30470898 and 30470907.

It is not an unprimeable number, because it can be changed into a prime (30471937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7068 + ... + 10530.

It is an arithmetic number, because the mean of its divisors is an integer number (2909760).

Almost surely, 230470937 is an apocalyptic number.

It is an amenable number.

30470937 is a deficient number, since it is larger than the sum of its proper divisors (16085223).

30470937 is a wasteful number, since it uses less digits than its factorization.

30470937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3892.

The product of its (nonzero) digits is 15876, while the sum is 33.

The square root of 30470937 is about 5520.0486410900. The cubic root of 30470937 is about 312.3407171198.

The spelling of 30470937 in words is "thirty million, four hundred seventy thousand, nine hundred thirty-seven".

Divisors: 1 3 7 21 419 1257 2933 3463 8799 10389 24241 72723 1450997 4352991 10156979 30470937