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109226861 = 142776543
BaseRepresentation
bin1101000001010…
…10101101101101
321121112022002022
412200222231231
5210430224421
614501035525
72464261442
oct640525555
9247468068
10109226861
1156723837
12306b5ba5
13198244a3
14107139c9
1598c87ab
hex682ab6d

109226861 has 4 divisors (see below), whose sum is σ = 109304832. Its totient is φ = 109148892.

The previous prime is 109226833. The next prime is 109226863. The reversal of 109226861 is 168622901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 168622901 = 267163131.

It is a cyclic number.

It is not a de Polignac number, because 109226861 - 26 = 109226797 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 (109226863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36845 + ... + 39698.

It is an arithmetic number, because the mean of its divisors is an integer number (27326208).

Almost surely, 2109226861 is an apocalyptic number.

It is an amenable number.

109226861 is a deficient number, since it is larger than the sum of its proper divisors (77971).

109226861 is an equidigital number, since it uses as much as digits as its factorization.

109226861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77970.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 109226861 is about 10451.1655330877. The cubic root of 109226861 is about 478.0167897909.

The spelling of 109226861 in words is "one hundred nine million, two hundred twenty-six thousand, eight hundred sixty-one".

Divisors: 1 1427 76543 109226861