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805245357 = 3738345017
BaseRepresentation
bin101111111111110…
…001000110101101
32002010012200222010
4233333301012231
53122120322412
6211523111433
725645321050
oct5777610655
92063180863
10805245357
113835a3834
121a5812579
13caa9b557
1478d32a97
154aa6133c
hex2fff11ad

805245357 has 8 divisors (see below), whose sum is σ = 1227040576. Its totient is φ = 460140192.

The previous prime is 805245269. The next prime is 805245359. The reversal of 805245357 is 753542508.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 805245357 - 27 = 805245229 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 (805245359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19172488 + ... + 19172529.

It is an arithmetic number, because the mean of its divisors is an integer number (153380072).

Almost surely, 2805245357 is an apocalyptic number.

It is an amenable number.

805245357 is a deficient number, since it is larger than the sum of its proper divisors (421795219).

805245357 is a wasteful number, since it uses less digits than its factorization.

805245357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38345027.

The product of its (nonzero) digits is 168000, while the sum is 39.

The square root of 805245357 is about 28376.8454377861. The cubic root of 805245357 is about 930.3422477194.

The spelling of 805245357 in words is "eight hundred five million, two hundred forty-five thousand, three hundred fifty-seven".

Divisors: 1 3 7 21 38345017 115035051 268415119 805245357