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190932469 = 7213378101
BaseRepresentation
bin10110110000101…
…10010111110101
3111022021101002221
423120112113311
5342334314334
630540202341
74505620300
oct1330262765
9438241087
10190932469
119885a432
1253b393b1
1330730cc0
141b501b37
1511b678b4
hexb6165f5

190932469 has 24 divisors (see below), whose sum is σ = 245685048. Its totient is φ = 146966400.

The previous prime is 190932461. The next prime is 190932473. The reversal of 190932469 is 964239091.

It can be written as a sum of positive squares in 4 ways, for example, as 99500625 + 91431844 = 9975^2 + 9562^2 .

It is not a de Polignac number, because 190932469 - 23 = 190932461 is a prime.

It is a super-2 number, since 2×1909324692 = 72910415436871922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190932461) 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, 19519 + ... + 27619.

It is an arithmetic number, because the mean of its divisors is an integer number (10236877).

Almost surely, 2190932469 is an apocalyptic number.

It is an amenable number.

190932469 is a deficient number, since it is larger than the sum of its proper divisors (54752579).

190932469 is a wasteful number, since it uses less digits than its factorization.

190932469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8165 (or 8158 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 190932469 is about 13817.8315592570. The cubic root of 190932469 is about 575.8286416785.

The spelling of 190932469 in words is "one hundred ninety million, nine hundred thirty-two thousand, four hundred sixty-nine".

Divisors: 1 7 13 37 49 91 259 481 637 1813 3367 8101 23569 56707 105313 299737 396949 737191 2098159 3896581 5160337 14687113 27276067 190932469