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12303890450 = 252246077809
BaseRepresentation
bin10110111010101111…
…00111100000010010
31011202110221101200022
423131113213200102
5200144243443300
65352523023442
7613621225505
oct133527474022
934673841608
1012303890450
115244253005
12247466ab82
1312110c5367
1484a12513c
154c029c285
hex2dd5e7812

12303890450 has 12 divisors (see below), whose sum is σ = 22885236330. Its totient is φ = 4921556160.

The previous prime is 12303890413. The next prime is 12303890507. The reversal of 12303890450 is 5409830321.

It can be written as a sum of positive squares in 3 ways, for example, as 11843315929 + 460574521 = 108827^2 + 21461^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12303890450.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123038855 + ... + 123038954.

Almost surely, 212303890450 is an apocalyptic number.

12303890450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12303890450 is a deficient number, since it is larger than the sum of its proper divisors (10581345880).

12303890450 is a wasteful number, since it uses less digits than its factorization.

12303890450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246077821 (or 246077816 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 12303890450 in words is "twelve billion, three hundred three million, eight hundred ninety thousand, four hundred fifty".

Divisors: 1 2 5 10 25 50 246077809 492155618 1230389045 2460778090 6151945225 12303890450