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88381028 = 22171299721
BaseRepresentation
bin1010100010010…
…01011001100100
320011022012222102
411101021121210
5140111143103
612434151232
72122140431
oct521113144
9204265872
1088381028
1145985a7a
1225722518
1315406088
14ba48b88
157b5be88
hex5449664

88381028 has 12 divisors (see below), whose sum is σ = 163764972. Its totient is φ = 41591040.

The previous prime is 88381003. The next prime is 88381043. The reversal of 88381028 is 82018388.

It can be written as a sum of positive squares in 2 ways, for example, as 82773604 + 5607424 = 9098^2 + 2368^2 .

It is a super-2 number, since 2×883810282 = 15622412220673568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 88380982 and 88381000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 649793 + ... + 649928.

It is an arithmetic number, because the mean of its divisors is an integer number (13647081).

Almost surely, 288381028 is an apocalyptic number.

It is an amenable number.

88381028 is a deficient number, since it is larger than the sum of its proper divisors (75383944).

88381028 is a wasteful number, since it uses less digits than its factorization.

88381028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299742 (or 1299740 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 38.

The square root of 88381028 is about 9401.1184441001. The cubic root of 88381028 is about 445.4370624921.

The spelling of 88381028 in words is "eighty-eight million, three hundred eighty-one thousand, twenty-eight".

Divisors: 1 2 4 17 34 68 1299721 2599442 5198884 22095257 44190514 88381028