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68926428 = 22321914623
BaseRepresentation
bin1000001101110…
…11101111011100
311210200211021200
410012323233130
5120121121203
610501155500
71464602454
oct406735734
9153624250
1068926428
11359a849a
121b0bbb90
1311383c8c
149222d64
1560b79a3
hex41bbbdc

68926428 has 18 divisors (see below), whose sum is σ = 174230784. Its totient is φ = 22975464.

The previous prime is 68926421. The next prime is 68926441. The reversal of 68926428 is 82462986.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68926421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 957276 + ... + 957347.

It is an arithmetic number, because the mean of its divisors is an integer number (9679488).

Almost surely, 268926428 is an apocalyptic number.

It is an amenable number.

68926428 is an abundant number, since it is smaller than the sum of its proper divisors (105304356).

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

68926428 is a wasteful number, since it uses less digits than its factorization.

68926428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914633 (or 1914628 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 68926428 is about 8302.1941678089. The cubic root of 68926428 is about 410.0107631519.

The spelling of 68926428 in words is "sixty-eight million, nine hundred twenty-six thousand, four hundred twenty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 1914623 3829246 5743869 7658492 11487738 17231607 22975476 34463214 68926428