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90123153 = 3131229321
BaseRepresentation
bin1010101111100…
…10101110010001
320021120201201120
411113302232101
5141032420103
612535352453
72143014501
oct527625621
9207521646
1090123153
114696594a
1226222729
1315896013
14bd7da01
157da3253
hex55f2b91

90123153 has 8 divisors (see below), whose sum is σ = 121082016. Its totient is φ = 59623200.

The previous prime is 90123133. The next prime is 90123167. The reversal of 90123153 is 35132109.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90123153 - 28 = 90122897 is a prime.

It is a super-2 number, since 2×901231532 = 16244365413322818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90123113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114268 + ... + 115053.

It is an arithmetic number, because the mean of its divisors is an integer number (15135252).

Almost surely, 290123153 is an apocalyptic number.

It is an amenable number.

90123153 is a deficient number, since it is larger than the sum of its proper divisors (30958863).

90123153 is a wasteful number, since it uses less digits than its factorization.

90123153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229455.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 90123153 is about 9493.3214946087. The cubic root of 90123153 is about 448.3447883212.

The spelling of 90123153 in words is "ninety million, one hundred twenty-three thousand, one hundred fifty-three".

Divisors: 1 3 131 393 229321 687963 30041051 90123153