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102944615 = 520588923
BaseRepresentation
bin1100010001011…
…00111101100111
321011201010110112
412020230331213
5202323211430
614114243235
72360005034
oct610547547
9234633415
10102944615
11531228a4
122a58651b
1318434b97
14d95a38b
159087195
hex622cf67

102944615 has 4 divisors (see below), whose sum is σ = 123533544. Its totient is φ = 82355688.

The previous prime is 102944591. The next prime is 102944627. The reversal of 102944615 is 516449201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 516449201 = 1159744533.

It is a cyclic number.

It is not a de Polignac number, because 102944615 - 26 = 102944551 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, 10294457 + ... + 10294466.

It is an arithmetic number, because the mean of its divisors is an integer number (30883386).

Almost surely, 2102944615 is an apocalyptic number.

102944615 is a deficient number, since it is larger than the sum of its proper divisors (20588929).

102944615 is an equidigital number, since it uses as much as digits as its factorization.

102944615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20588928.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 102944615 is about 10146.1625750823. The cubic root of 102944615 is about 468.6707803310.

The spelling of 102944615 in words is "one hundred two million, nine hundred forty-four thousand, six hundred fifteen".

Divisors: 1 5 20588923 102944615