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30001534 = 299115137
BaseRepresentation
bin111001001110…
…0100101111110
32002110020100221
41302130211332
530140022114
62551011554
7513003013
oct162344576
962406327
1030001534
1115a31662
12a069bba
1362a58b4
143dad70a
152979524
hex1c9c97e

30001534 has 8 divisors (see below), whose sum is σ = 45050688. Its totient is φ = 14984640.

The previous prime is 30001529. The next prime is 30001537. The reversal of 30001534 is 43510003.

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 (30001537) 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, 5587 + ... + 9550.

It is an arithmetic number, because the mean of its divisors is an integer number (5631336).

Almost surely, 230001534 is an apocalyptic number.

30001534 is a deficient number, since it is larger than the sum of its proper divisors (15049154).

30001534 is a wasteful number, since it uses less digits than its factorization.

30001534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16130.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 30001534 is about 5477.3656076621. The cubic root of 30001534 is about 310.7285466103.

Adding to 30001534 its reverse (43510003), we get a palindrome (73511537).

The spelling of 30001534 in words is "thirty million, one thousand, five hundred thirty-four".

Divisors: 1 2 991 1982 15137 30274 15000767 30001534