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88020880 = 2451100261
BaseRepresentation
bin1010011111100…
…01011110010000
320010121220221121
411033301132100
5140013132010
612422332024
72116110433
oct517613620
9203556847
1088020880
114575a432
122558a014
131530b17c
14b99381a
157ada3da
hex53f1790

88020880 has 20 divisors (see below), whose sum is σ = 204648732. Its totient is φ = 35208320.

The previous prime is 88020869. The next prime is 88020899. The reversal of 88020880 is 8802088.

It can be written as a sum of positive squares in 2 ways, for example, as 43718544 + 44302336 = 6612^2 + 6656^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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, 550051 + ... + 550210.

Almost surely, 288020880 is an apocalyptic number.

88020880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

88020880 is an abundant number, since it is smaller than the sum of its proper divisors (116627852).

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

88020880 is a wasteful number, since it uses less digits than its factorization.

88020880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100274 (or 1100268 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 34.

The square root of 88020880 is about 9381.9443613784. The cubic root of 88020880 is about 444.8311946533.

The spelling of 88020880 in words is "eighty-eight million, twenty thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 1100261 2200522 4401044 5501305 8802088 11002610 17604176 22005220 44010440 88020880