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92020805 = 518404161
BaseRepresentation
bin1010111110000…
…10000001000101
320102011010210222
411133002001011
5142024131210
613044154125
72165110142
oct537020105
9212133728
1092020805
1147a41658
1226998945
13160ab9a6
14c3153c9
15812a655
hex57c2045

92020805 has 4 divisors (see below), whose sum is σ = 110424972. Its totient is φ = 73616640.

The previous prime is 92020777. The next prime is 92020829. The reversal of 92020805 is 50802029.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50802029 = 192673791.

It can be written as a sum of positive squares in 2 ways, for example, as 59382436 + 32638369 = 7706^2 + 5713^2 .

It is not a de Polignac number, because 92020805 - 28 = 92020549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9202076 + ... + 9202085.

It is an arithmetic number, because the mean of its divisors is an integer number (27606243).

Almost surely, 292020805 is an apocalyptic number.

It is an amenable number.

92020805 is a deficient number, since it is larger than the sum of its proper divisors (18404167).

92020805 is a wasteful number, since it uses less digits than its factorization.

92020805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18404166.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 92020805 is about 9592.7475209139. The cubic root of 92020805 is about 451.4697704052.

The spelling of 92020805 in words is "ninety-two million, twenty thousand, eight hundred five".

Divisors: 1 5 18404161 92020805