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9472749 = 3111371311
BaseRepresentation
bin100100001000…
…101011101101
3122211021011120
4210020223231
54411111444
6535011153
7143342226
oct44105355
918737146
109472749
115390020
123209ab9
131c688a0
14138824d
15c71b19
hex908aed

9472749 has 32 divisors (see below), whose sum is σ = 15095808. Its totient is φ = 5208000.

The previous prime is 9472747. The next prime is 9472759.

9472749 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9472749 - 21 = 9472747 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a zygodrome in base 5.

It is a self number, because there is not a number n which added to its sum of digits gives 9472749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9472747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30304 + ... + 30614.

It is an arithmetic number, because the mean of its divisors is an integer number (471744).

Almost surely, 29472749 is an apocalyptic number.

It is an amenable number.

9472749 is a deficient number, since it is larger than the sum of its proper divisors (5623059).

9472749 is a wasteful number, since it uses less digits than its factorization.

9472749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409.

The product of its digits is 127008, while the sum is 42.

The square root of 9472749 is about 3077.7831307615. The cubic root of 9472749 is about 211.5884757453.

The spelling of 9472749 in words is "nine million, four hundred seventy-two thousand, seven hundred forty-nine".

Divisors: 1 3 11 13 33 39 71 143 213 311 429 781 923 933 2343 2769 3421 4043 10153 10263 12129 22081 30459 44473 66243 133419 242891 287053 728673 861159 3157583 9472749