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68880884 = 2231555491
BaseRepresentation
bin1000001101100…
…00100111110100
311210121111210212
410012300213310
5120113142014
610500204552
71464322622
oct406604764
9153544725
1068880884
1135977256
121b099758
1311369327
149210512
1560a923e
hex41b09f4

68880884 has 12 divisors (see below), whose sum is σ = 124430208. Its totient is φ = 33329400.

The previous prime is 68880881. The next prime is 68880893. The reversal of 68880884 is 48808886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68880881) 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, 277622 + ... + 277869.

It is an arithmetic number, because the mean of its divisors is an integer number (10369184).

Almost surely, 268880884 is an apocalyptic number.

It is an amenable number.

68880884 is a deficient number, since it is larger than the sum of its proper divisors (55549324).

68880884 is a wasteful number, since it uses less digits than its factorization.

68880884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555526 (or 555524 counting only the distinct ones).

The product of its (nonzero) digits is 786432, while the sum is 50.

The square root of 68880884 is about 8299.4508252052. The cubic root of 68880884 is about 409.9204366730.

The spelling of 68880884 in words is "sixty-eight million, eight hundred eighty thousand, eight hundred eighty-four".

Divisors: 1 2 4 31 62 124 555491 1110982 2221964 17220221 34440442 68880884