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30031454 = 2121312379
BaseRepresentation
bin111001010001…
…1111001011110
32002111202102002
41302203321132
530142001304
62551402302
7513156155
oct162437136
962452362
1030031454
1115a52092
12a083392
1362b63bb
143dba59c
15298331e
hex1ca3e5e

30031454 has 8 divisors (see below), whose sum is σ = 45087960. Its totient is φ = 15002136.

The previous prime is 30031453. The next prime is 30031481. The reversal of 30031454 is 45413003.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30031453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3764 + ... + 8615.

It is an arithmetic number, because the mean of its divisors is an integer number (5635995).

Almost surely, 230031454 is an apocalyptic number.

30031454 is a deficient number, since it is larger than the sum of its proper divisors (15056506).

30031454 is a wasteful number, since it uses less digits than its factorization.

30031454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13594.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 30031454 is about 5480.0961670394. The cubic root of 30031454 is about 310.8318069886.

Adding to 30031454 its reverse (45413003), we get a palindrome (75444457).

The spelling of 30031454 in words is "thirty million, thirty-one thousand, four hundred fifty-four".

Divisors: 1 2 1213 2426 12379 24758 15015727 30031454