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68898456 = 23321186993
BaseRepresentation
bin1000001101101…
…00111010011000
311210122101220200
410012310322120
5120114222311
610500422200
71464425064
oct406647230
9153571820
1068898456
1135989480
121b0a7960
1311374323
149216aa4
1560ae556
hex41b4e98

68898456 has 48 divisors (see below), whose sum is σ = 203565960. Its totient is φ = 20878080.

The previous prime is 68898449. The next prime is 68898457. The reversal of 68898456 is 65489886.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68898457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42705 + ... + 44288.

Almost surely, 268898456 is an apocalyptic number.

68898456 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

68898456 is an abundant number, since it is smaller than the sum of its proper divisors (134667504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68898456 is a wasteful number, since it uses less digits than its factorization.

68898456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87016 (or 87009 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The square root of 68898456 is about 8300.5093819596. The cubic root of 68898456 is about 409.9552915755.

The spelling of 68898456 in words is "sixty-eight million, eight hundred ninety-eight thousand, four hundred fifty-six".

Divisors: 1 2 3 4 6 8 9 11 12 18 22 24 33 36 44 66 72 88 99 132 198 264 396 792 86993 173986 260979 347972 521958 695944 782937 956923 1043916 1565874 1913846 2087832 2870769 3131748 3827692 5741538 6263496 7655384 8612307 11483076 17224614 22966152 34449228 68898456