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288331417 = 11374715073
BaseRepresentation
bin10001001011111…
…001011010011001
3202002112202100101
4101023321122121
51042303101132
644335535401
710100530243
oct2113713231
9662482311
10288331417
11138834730
128068a561
134797390a
142a417093
151a4a67e7
hex112f9699

288331417 has 16 divisors (see below), whose sum is σ = 329939712. Its totient is φ = 249592320.

The previous prime is 288331399. The next prime is 288331457. The reversal of 288331417 is 714133882.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-288331417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (288331457) 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, 11593 + ... + 26665.

It is an arithmetic number, because the mean of its divisors is an integer number (20621232).

Almost surely, 2288331417 is an apocalyptic number.

It is an amenable number.

288331417 is a deficient number, since it is larger than the sum of its proper divisors (41608295).

288331417 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (288331416) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (15168).

288331417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15168.

The product of its digits is 32256, while the sum is 37.

The square root of 288331417 is about 16980.3244079729. The cubic root of 288331417 is about 660.6386662903.

It can be divided in two parts, 288 and 331417, that added together give a triangular number (331705 = T814).

The spelling of 288331417 in words is "two hundred eighty-eight million, three hundred thirty-one thousand, four hundred seventeen".

Divisors: 1 11 37 47 407 517 1739 15073 19129 165803 557701 708431 6134711 7792741 26211947 288331417