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68798456 = 2317505871
BaseRepresentation
bin1000001100111…
…00011111111000
311210110022201222
410012130133320
5120103022311
610454331212
71463530406
oct406343770
9153408658
1068798456
1135920331
121b059b08
131133a95c
1491cc476
15608eadb
hex419c7f8

68798456 has 16 divisors (see below), whose sum is σ = 136585440. Its totient is φ = 32375680.

The previous prime is 68798453. The next prime is 68798461. The reversal of 68798456 is 65489786.

It is a junction number, because it is equal to n+sod(n) for n = 68798398 and 68798407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68798453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252800 + ... + 253071.

It is an arithmetic number, because the mean of its divisors is an integer number (8536590).

Almost surely, 268798456 is an apocalyptic number.

It is an amenable number.

68798456 is a deficient number, since it is larger than the sum of its proper divisors (67786984).

68798456 is a wasteful number, since it uses less digits than its factorization.

68798456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505894 (or 505890 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 53.

The square root of 68798456 is about 8294.4834679442. The cubic root of 68798456 is about 409.7568576224.

The spelling of 68798456 in words is "sixty-eight million, seven hundred ninety-eight thousand, four hundred fifty-six".

Divisors: 1 2 4 8 17 34 68 136 505871 1011742 2023484 4046968 8599807 17199614 34399228 68798456