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303996407 = 1131317569
BaseRepresentation
bin10010000111101…
…001110111110111
3210012000121200012
4102013221313313
51110310341112
650055410435
710350632621
oct2207516767
9705017605
10303996407
11146664000
1285983a1b
134ac99b40
142c533c11
151ba4d022
hex121e9df7

303996407 has 16 divisors (see below), whose sum is σ = 360114720. Its totient is φ = 255087360.

The previous prime is 303996401. The next prime is 303996419. The reversal of 303996407 is 704699303.

It is not a de Polignac number, because 303996407 - 216 = 303930871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303996401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8519 + ... + 26087.

It is an arithmetic number, because the mean of its divisors is an integer number (22507170).

Almost surely, 2303996407 is an apocalyptic number.

303996407 is a deficient number, since it is larger than the sum of its proper divisors (56118313).

303996407 is a wasteful number, since it uses less digits than its factorization.

303996407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17615 (or 17593 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 41.

The square root of 303996407 is about 17435.4927375168. The cubic root of 303996407 is about 672.3924323192.

It can be divided in two parts, 303996 and 407, that added together give a palindrome (304403).

The spelling of 303996407 in words is "three hundred three million, nine hundred ninety-six thousand, four hundred seven".

Divisors: 1 11 13 121 143 1331 1573 17303 17569 193259 228397 2125849 2512367 23384339 27636037 303996407