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88121406 = 23313831237
BaseRepresentation
bin1010100000010…
…10000000111110
320010211000211210
411100022000332
5140024341111
612424425250
72120006502
oct520120076
9203730753
1088121406
1145818a0a
1225618226
1315344b59
14b9bc302
157b0a0a6
hex540a03e

88121406 has 32 divisors (see below), whose sum is σ = 182550528. Its totient is φ = 28329120.

The previous prime is 88121357. The next prime is 88121417. The reversal of 88121406 is 60412188.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70620 + ... + 71856.

It is an arithmetic number, because the mean of its divisors is an integer number (5704704).

Almost surely, 288121406 is an apocalyptic number.

88121406 is an abundant number, since it is smaller than the sum of its proper divisors (94429122).

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

88121406 is a wasteful number, since it uses less digits than its factorization.

88121406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 88121406 is about 9387.3002508709. The cubic root of 88121406 is about 445.0004730037. Note that the first 3 decimals are identical.

The spelling of 88121406 in words is "eighty-eight million, one hundred twenty-one thousand, four hundred six".

Divisors: 1 2 3 6 31 62 93 186 383 766 1149 1237 2298 2474 3711 7422 11873 23746 35619 38347 71238 76694 115041 230082 473771 947542 1421313 2842626 14686901 29373802 44060703 88121406