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190067238 = 23210559291
BaseRepresentation
bin10110101010000…
…11001000100110
3111020122102020100
423111003020212
5342124122423
630505444530
74465354614
oct1325031046
9436572210
10190067238
1198319369
12537a0746
13304ba22a
141b3586b4
1511a46343
hexb543226

190067238 has 12 divisors (see below), whose sum is σ = 411812388. Its totient is φ = 63355740.

The previous prime is 190067237. The next prime is 190067257. The reversal of 190067238 is 832760091.

It is a super-2 number, since 2×1900672382 = 72251109921897288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190067237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5279628 + ... + 5279663.

It is an arithmetic number, because the mean of its divisors is an integer number (34317699).

Almost surely, 2190067238 is an apocalyptic number.

190067238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

190067238 is an abundant number, since it is smaller than the sum of its proper divisors (221745150).

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

190067238 is a wasteful number, since it uses less digits than its factorization.

190067238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10559299 (or 10559296 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 190067238 is about 13786.4875149546. The cubic root of 190067238 is about 574.9575146933.

It can be divided in two parts, 19006 and 7238, that added together give a square (26244 = 1622).

The spelling of 190067238 in words is "one hundred ninety million, sixty-seven thousand, two hundred thirty-eight".

Divisors: 1 2 3 6 9 18 10559291 21118582 31677873 63355746 95033619 190067238