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15134890 = 251513489
BaseRepresentation
bin111001101111…
…000010101010
31001110221011111
4321233002222
512333304030
61300220534
7242434021
oct71570252
931427144
1015134890
1185a8081
12509a74a
13319bb74
14201d8b8
1514de62a
hexe6f0aa

15134890 has 8 divisors (see below), whose sum is σ = 27242820. Its totient is φ = 6053952.

The previous prime is 15134869. The next prime is 15134891. The reversal of 15134890 is 9843151.

It can be written as a sum of positive squares in 2 ways, for example, as 14676561 + 458329 = 3831^2 + 677^2 .

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

It is not an unprimeable number, because it can be changed into a prime (15134891) 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 3 ways as a sum of consecutive naturals, for example, 756735 + ... + 756754.

Almost surely, 215134890 is an apocalyptic number.

15134890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15134890 is a deficient number, since it is larger than the sum of its proper divisors (12107930).

15134890 is a wasteful number, since it uses less digits than its factorization.

15134890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513496.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 15134890 is about 3890.3585952968. The cubic root of 15134890 is about 247.3582632332.

The spelling of 15134890 in words is "fifteen million, one hundred thirty-four thousand, eight hundred ninety".

Divisors: 1 2 5 10 1513489 3026978 7567445 15134890