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190285664 = 2543138289
BaseRepresentation
bin10110101011110…
…00011101100000
3111021001111212012
423111320131200
5342203120124
630514252052
74500254462
oct1325703540
9437044765
10190285664
1198458488
1253887028
133056578a
141b3b4132
1511a8ae0e
hexb578760

190285664 has 24 divisors (see below), whose sum is σ = 383339880. Its totient is φ = 92929536.

The previous prime is 190285663. The next prime is 190285681. The reversal of 190285664 is 466582091.

It is a happy number.

190285664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190285663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67769 + ... + 70520.

It is an arithmetic number, because the mean of its divisors is an integer number (15972495).

Almost surely, 2190285664 is an apocalyptic number.

It is an amenable number.

190285664 is an abundant number, since it is smaller than the sum of its proper divisors (193054216).

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

190285664 is a wasteful number, since it uses less digits than its factorization.

190285664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138342 (or 138334 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 190285664 is about 13794.4069825419. The cubic root of 190285664 is about 575.1776781721.

The spelling of 190285664 in words is "one hundred ninety million, two hundred eighty-five thousand, six hundred sixty-four".

Divisors: 1 2 4 8 16 32 43 86 172 344 688 1376 138289 276578 553156 1106312 2212624 4425248 5946427 11892854 23785708 47571416 95142832 190285664