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15000147 = 3561729
BaseRepresentation
bin111001001110…
…001001010011
31001020002100000
4321032021103
512320001042
61253301043
7241333131
oct71161123
931202300
1015000147
118515918
125034783
133152736
141dc6751
1514b474c
hexe4e253

15000147 has 12 divisors (see below), whose sum is σ = 22469720. Its totient is φ = 9999936.

The previous prime is 15000131. The next prime is 15000151. The reversal of 15000147 is 74100051.

15000147 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15000147 - 24 = 15000131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15000127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30622 + ... + 31107.

Almost surely, 215000147 is an apocalyptic number.

15000147 is a deficient number, since it is larger than the sum of its proper divisors (7469573).

15000147 is an frugal number, since it uses more digits than its factorization.

15000147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61744 (or 61732 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 15000147 is about 3873.0023237793. The cubic root of 15000147 is about 246.6220130597.

Subtracting from 15000147 its sum of digits (18), we obtain a square (15000129 = 38732).

Adding to 15000147 its reverse (74100051), we get a palindrome (89100198).

The spelling of 15000147 in words is "fifteen million, one hundred forty-seven", and thus it is an aban number.

Divisors: 1 3 9 27 81 243 61729 185187 555561 1666683 5000049 15000147