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88909028 = 22131709789
BaseRepresentation
bin1010100110010…
…10010011100100
320012022001020222
411103022103210
5140230042103
612453343512
72126466665
oct523122344
9205261228
1088909028
114620673a
1225937b98
131555c4c0
14bb4536c
157c13638
hex54ca4e4

88909028 has 12 divisors (see below), whose sum is σ = 167559420. Its totient is φ = 41034912.

The previous prime is 88909013. The next prime is 88909061. The reversal of 88909028 is 82090988.

It can be written as a sum of positive squares in 2 ways, for example, as 45454564 + 43454464 = 6742^2 + 6592^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 88909028.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 854843 + ... + 854946.

It is an arithmetic number, because the mean of its divisors is an integer number (13963285).

Almost surely, 288909028 is an apocalyptic number.

It is an amenable number.

88909028 is a deficient number, since it is larger than the sum of its proper divisors (78650392).

88909028 is a wasteful number, since it uses less digits than its factorization.

88909028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1709806 (or 1709804 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 88909028 is about 9429.1583929850. The cubic root of 88909028 is about 446.3223353044.

The spelling of 88909028 in words is "eighty-eight million, nine hundred nine thousand, twenty-eight".

Divisors: 1 2 4 13 26 52 1709789 3419578 6839156 22227257 44454514 88909028