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190004311 = 7223533181
BaseRepresentation
bin10110101001100…
…11110001010111
3111020112012220201
423110303301113
5342120114221
630504241331
74465003300
oct1324636127
9436465821
10190004311
1198286062
1253770247
13304976b3
141b33d7a7
1511a32891
hexb533c57

190004311 has 24 divisors (see below), whose sum is σ = 235060704. Its totient is φ = 152792640.

The previous prime is 190004303. The next prime is 190004371. The reversal of 190004311 is 113400091.

It is a happy number.

It is not a de Polignac number, because 190004311 - 23 = 190004303 is a prime.

It is a super-2 number, since 2×1900043112 = 72203276397169442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190004371) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58141 + ... + 61321.

It is an arithmetic number, because the mean of its divisors is an integer number (9794196).

Almost surely, 2190004311 is an apocalyptic number.

190004311 is a deficient number, since it is larger than the sum of its proper divisors (45056393).

190004311 is a wasteful number, since it uses less digits than its factorization.

190004311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3271 (or 3264 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 190004311 is about 13784.2051276089. The cubic root of 190004311 is about 574.8940558432.

The spelling of 190004311 in words is "one hundred ninety million, four thousand, three hundred eleven".

Divisors: 1 7 23 49 53 161 371 1127 1219 2597 3181 8533 22267 59731 73163 155869 168593 512141 1180151 3584987 3877639 8261057 27143473 190004311