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109950215 = 521990043
BaseRepresentation
bin1101000110110…
…11010100000111
321122220001100012
412203123110013
5211121401330
614524340435
72503363364
oct643332407
9248801305
10109950215
1157078251
12309a471b
1319a187cb
141086146b
1599bcc95
hex68db507

109950215 has 4 divisors (see below), whose sum is σ = 131940264. Its totient is φ = 87960168.

The previous prime is 109950193. The next prime is 109950221. The reversal of 109950215 is 512059901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512059901 = 823622187.

It is a cyclic number.

It is not a de Polignac number, because 109950215 - 218 = 109688071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10995017 + ... + 10995026.

It is an arithmetic number, because the mean of its divisors is an integer number (32985066).

Almost surely, 2109950215 is an apocalyptic number.

109950215 is a deficient number, since it is larger than the sum of its proper divisors (21990049).

109950215 is an equidigital number, since it uses as much as digits as its factorization.

109950215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21990048.

The product of its (nonzero) digits is 4050, while the sum is 32.

The square root of 109950215 is about 10485.7148063449. The cubic root of 109950215 is about 479.0696896960.

The spelling of 109950215 in words is "one hundred nine million, nine hundred fifty thousand, two hundred fifteen".

Divisors: 1 5 21990043 109950215