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30514405 = 517358993
BaseRepresentation
bin111010001100…
…1110011100101
32010102021220011
41310121303211
530302430110
63010010221
7520240165
oct164316345
963367804
1030514405
1116251a19
12a276971
13642517c
1440a45a5
152a2b48a
hex1d19ce5

30514405 has 8 divisors (see below), whose sum is σ = 38771352. Its totient is φ = 22975488.

The previous prime is 30514403. The next prime is 30514411. The reversal of 30514405 is 50441503.

It can be written as a sum of positive squares in 4 ways, for example, as 6081156 + 24433249 = 2466^2 + 4943^2 .

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 30514405 - 21 = 30514403 is a prime.

It is a super-2 number, since 2×305144052 = 1862257825008050, 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 (30514403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179412 + ... + 179581.

It is an arithmetic number, because the mean of its divisors is an integer number (4846419).

Almost surely, 230514405 is an apocalyptic number.

It is an amenable number.

30514405 is a deficient number, since it is larger than the sum of its proper divisors (8256947).

30514405 is a wasteful number, since it uses less digits than its factorization.

30514405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359015.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 30514405 is about 5523.9845220638. The cubic root of 30514405 is about 312.4891686913.

Adding to 30514405 its reverse (50441503), we get a palindrome (80955908).

The spelling of 30514405 in words is "thirty million, five hundred fourteen thousand, four hundred five".

Divisors: 1 5 17 85 358993 1794965 6102881 30514405