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79200061 = 334723663
BaseRepresentation
bin1001011100001…
…11111100111101
312112000210001121
410232013330331
5130233400221
611505310541
71651121653
oct456077475
9175023047
1079200061
11407851a6
1222635451
1313540255
14a738dd3
156e46a41
hex4b87f3d

79200061 has 4 divisors (see below), whose sum is σ = 79227072. Its totient is φ = 79173052.

The previous prime is 79200049. The next prime is 79200101. The reversal of 79200061 is 16000297.

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: 16000297 = 54729251.

It is a cyclic number.

It is not a de Polignac number, because 79200061 - 215 = 79167293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79199999 and 79200035.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79200001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8485 + ... + 15178.

It is an arithmetic number, because the mean of its divisors is an integer number (19806768).

Almost surely, 279200061 is an apocalyptic number.

It is an amenable number.

79200061 is a deficient number, since it is larger than the sum of its proper divisors (27011).

79200061 is a wasteful number, since it uses less digits than its factorization.

79200061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27010.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 79200061 is about 8899.4416116968. The cubic root of 79200061 is about 429.4459440571.

The spelling of 79200061 in words is "seventy-nine million, two hundred thousand, sixty-one".

Divisors: 1 3347 23663 79200061