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30494261 = 717924337
BaseRepresentation
bin111010001010…
…0111000110101
32010101021021002
41310110320311
530301304021
63005333045
7520124360
oct164247065
963337232
1030494261
1116238876
12a267185
136418c55
14409b0d7
152a2550b
hex1d14e35

30494261 has 8 divisors (see below), whose sum is σ = 35046720. Its totient is φ = 25990848.

The previous prime is 30494227. The next prime is 30494279. The reversal of 30494261 is 16249403.

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

It is a cyclic number.

It is not a de Polignac number, because 30494261 - 214 = 30477877 is a prime.

It is a super-2 number, since 2×304942612 = 1859799907872242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30494461) 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 7 ways as a sum of consecutive naturals, for example, 10916 + ... + 13421.

It is an arithmetic number, because the mean of its divisors is an integer number (4380840).

Almost surely, 230494261 is an apocalyptic number.

It is an amenable number.

30494261 is a deficient number, since it is larger than the sum of its proper divisors (4552459).

30494261 is a wasteful number, since it uses less digits than its factorization.

30494261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24523.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 30494261 is about 5522.1608995030. The cubic root of 30494261 is about 312.4203906012.

The spelling of 30494261 in words is "thirty million, four hundred ninety-four thousand, two hundred sixty-one".

Divisors: 1 7 179 1253 24337 170359 4356323 30494261