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30412975 = 52672271
BaseRepresentation
bin111010000000…
…1000010101111
32010020010202111
41310001002233
530241203400
63003504451
7516335365
oct164010257
963203674
1030412975
111619279a
12a228127
1363bac58
144079635
152a0b3ba
hex1d010af

30412975 has 18 divisors (see below), whose sum is σ = 38424624. Its totient is φ = 23878800.

The previous prime is 30412957. The next prime is 30412999. The reversal of 30412975 is 57921403.

It is not a de Polignac number, because 30412975 - 219 = 29888687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 112090 + ... + 112360.

Almost surely, 230412975 is an apocalyptic number.

30412975 is a deficient number, since it is larger than the sum of its proper divisors (8011649).

30412975 is an equidigital number, since it uses as much as digits as its factorization.

30412975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415 (or 343 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 30412975 is about 5514.7960071067. The cubic root of 30412975 is about 312.1425459477.

The spelling of 30412975 in words is "thirty million, four hundred twelve thousand, nine hundred seventy-five".

Divisors: 1 5 25 67 271 335 1355 1675 4489 6775 18157 22445 90785 112225 453925 1216519 6082595 30412975