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289700901 = 3377432063
BaseRepresentation
bin10001010001000…
…111110000100101
3202012010022221000
4101101013300211
51043130412101
644425143513
710115263020
oct2121076045
9665108830
10289700901
1113958a636
128102ab99
1348033069
142a6921b7
151a677486
hex11447c25

289700901 has 32 divisors (see below), whose sum is σ = 491397120. Its totient is φ = 165240432.

The previous prime is 289700869. The next prime is 289700909. The reversal of 289700901 is 109007982.

It is a happy number.

It is not a de Polignac number, because 289700901 - 25 = 289700869 is a prime.

It is a super-2 number, since 2×2897009012 = 167853224080423602, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289700909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139396 + ... + 141458.

It is an arithmetic number, because the mean of its divisors is an integer number (15356160).

Almost surely, 2289700901 is an apocalyptic number.

289700901 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

289700901 is a deficient number, since it is larger than the sum of its proper divisors (201696219).

289700901 is a wasteful number, since it uses less digits than its factorization.

289700901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2822 (or 2816 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 289700901 is about 17020.6022513893. The cubic root of 289700901 is about 661.6829569879.

The spelling of 289700901 in words is "two hundred eighty-nine million, seven hundred thousand, nine hundred one".

Divisors: 1 3 7 9 21 27 63 189 743 2063 2229 5201 6189 6687 14441 15603 18567 20061 43323 46809 55701 129969 140427 389907 1532809 4598427 10729663 13795281 32188989 41385843 96566967 289700901